<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.wdc.com/20190628" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:wdc="http://www.wdc.com/20190628" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:import namespace="http://fasb.org/srt-types/2019-01-31" schemaLocation="http://xbrl.fasb.org/srt/2019/elts/srt-types-2019-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/srt/2019-01-31" schemaLocation="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-gaap/2019-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-roles/2019-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2019/elts/us-roles-2019-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-types/2019-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2019/elts/us-types-2019-01-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/net" schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" />
  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/country/2017-01-31" schemaLocation="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/currency/2019-01-31" schemaLocation="https://xbrl.sec.gov/currency/2019/currency-2019-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2019-01-31" schemaLocation="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/exch/2019-01-31" schemaLocation="https://xbrl.sec.gov/exch/2019/exch-2019-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/invest/2013-01-31" schemaLocation="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/naics/2017-01-31" schemaLocation="http://xbrl.sec.gov/naics/2017/naics-2017-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/sic/2011-01-31" schemaLocation="http://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/stpr/2018-01-31" schemaLocation="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd" />
  <xsd:annotation>
    <xsd:appinfo>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="wdc-20190628_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="wdc-20190628_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="wdc-20190628_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="wdc-20190628_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple" />
      <link:roleType id="BusinessSegmentRevenueInformationGeographicInformationAndConcentrationOfRisk" roleURI="http://www.wdc.com/role/BusinessSegmentRevenueInformationGeographicInformationAndConcentrationOfRisk">
        <link:definition>2110100 - Disclosure - Business Segment, Revenue Information, Geographic Information and Concentration of Risk</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessSegmentRevenueInformationGeographicInformationAndConcentrationOfRiskAdditionalInformationDetails" roleURI="http://www.wdc.com/role/BusinessSegmentRevenueInformationGeographicInformationAndConcentrationOfRiskAdditionalInformationDetails">
        <link:definition>2410405 - Disclosure - Business Segment, Revenue Information, Geographic Information and Concentration of Risk - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessSegmentRevenueInformationGeographicInformationAndConcentrationOfRiskLongLivedAssetsByGeographyDetails" roleURI="http://www.wdc.com/role/BusinessSegmentRevenueInformationGeographicInformationAndConcentrationOfRiskLongLivedAssetsByGeographyDetails">
        <link:definition>2410404 - Disclosure - Business Segment, Revenue Information, Geographic Information and Concentration of Risk - Long-lived Assets by Geography (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessSegmentRevenueInformationGeographicInformationAndConcentrationOfRiskRevenueByEndMarketAndFormFactorDetails" roleURI="http://www.wdc.com/role/BusinessSegmentRevenueInformationGeographicInformationAndConcentrationOfRiskRevenueByEndMarketAndFormFactorDetails">
        <link:definition>2410402 - Disclosure - Business Segment, Revenue Information, Geographic Information and Concentration of Risk - Revenue by End Market and Form Factor (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessSegmentRevenueInformationGeographicInformationAndConcentrationOfRiskRevenueByGeographyDetails" roleURI="http://www.wdc.com/role/BusinessSegmentRevenueInformationGeographicInformationAndConcentrationOfRiskRevenueByGeographyDetails">
        <link:definition>2410403 - Disclosure - Business Segment, Revenue Information, Geographic Information and Concentration of Risk - Revenue by Geography (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessSegmentRevenueInformationGeographicInformationAndConcentrationOfRiskTables" roleURI="http://www.wdc.com/role/BusinessSegmentRevenueInformationGeographicInformationAndConcentrationOfRiskTables">
        <link:definition>2310301 - Disclosure - Business Segment, Revenue Information, Geographic Information and Concentration of Risk (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsContingenciesAndRelatedParties" roleURI="http://www.wdc.com/role/CommitmentsContingenciesAndRelatedParties">
        <link:definition>2108100 - Disclosure - Commitments, Contingencies and Related Parties</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsContingenciesAndRelatedPartiesAdditionalInformationDetails" roleURI="http://www.wdc.com/role/CommitmentsContingenciesAndRelatedPartiesAdditionalInformationDetails">
        <link:definition>2408402 - Disclosure - Commitments, Contingencies and Related Parties - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsContingenciesAndRelatedPartiesEquityInvestmentsDetails" roleURI="http://www.wdc.com/role/CommitmentsContingenciesAndRelatedPartiesEquityInvestmentsDetails">
        <link:definition>2408403 - Disclosure - Commitments, Contingencies and Related Parties - Equity Investments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsContingenciesAndRelatedPartiesFutureMinimumLeasePaymentsUnderOperatingLeasesDetails" roleURI="http://www.wdc.com/role/CommitmentsContingenciesAndRelatedPartiesFutureMinimumLeasePaymentsUnderOperatingLeasesDetails">
        <link:definition>2408407 - Disclosure - Commitments, Contingencies and Related Parties - Future Minimum Lease Payments under Operating Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsContingenciesAndRelatedPartiesJointVentureLeaseAmountsDetails" roleURI="http://www.wdc.com/role/CommitmentsContingenciesAndRelatedPartiesJointVentureLeaseAmountsDetails">
        <link:definition>2408406 - Disclosure - Commitments, Contingencies and Related Parties - Joint Venture Lease Amounts (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsContingenciesAndRelatedPartiesJvLeaseGuaranteesDetails" roleURI="http://www.wdc.com/role/CommitmentsContingenciesAndRelatedPartiesJvLeaseGuaranteesDetails">
        <link:definition>2408405 - Disclosure - Commitments, Contingencies and Related Parties - JV Lease Guarantees (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsContingenciesAndRelatedPartiesMaximumLossExposureDetails" roleURI="http://www.wdc.com/role/CommitmentsContingenciesAndRelatedPartiesMaximumLossExposureDetails">
        <link:definition>2408404 - Disclosure - Commitments, Contingencies and Related Parties - Maximum Loss Exposure (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsContingenciesAndRelatedPartiesPurchaseAgreementsDetails" roleURI="http://www.wdc.com/role/CommitmentsContingenciesAndRelatedPartiesPurchaseAgreementsDetails">
        <link:definition>2408409 - Disclosure - Commitments, Contingencies and Related Parties - Purchase Agreements (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsContingenciesAndRelatedPartiesRentExpenseDetails" roleURI="http://www.wdc.com/role/CommitmentsContingenciesAndRelatedPartiesRentExpenseDetails">
        <link:definition>2408408 - Disclosure - Commitments, Contingencies and Related Parties - Rent Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsContingenciesAndRelatedPartiesTables" roleURI="http://www.wdc.com/role/CommitmentsContingenciesAndRelatedPartiesTables">
        <link:definition>2308301 - Disclosure - Commitments, Contingencies and Related Parties (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheets" roleURI="http://www.wdc.com/role/ConsolidatedBalanceSheets">
        <link:definition>1001000 - Statement - Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheetsCalc2" roleURI="http://www.wdc.com/role/ConsolidatedBalanceSheetsCalc2">
        <link:definition>1001000 - Statement - Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheetsParenthetical" roleURI="http://www.wdc.com/role/ConsolidatedBalanceSheetsParenthetical">
        <link:definition>1001501 - Statement - Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfCashFlows" roleURI="http://www.wdc.com/role/ConsolidatedStatementsOfCashFlows">
        <link:definition>1004000 - Statement - Consolidated Statements of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfComprehensiveIncome" roleURI="http://www.wdc.com/role/ConsolidatedStatementsOfComprehensiveIncome">
        <link:definition>1003000 - Statement - Consolidated Statements of Comprehensive Income</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfOperations" roleURI="http://www.wdc.com/role/ConsolidatedStatementsOfOperations">
        <link:definition>1002000 - Statement - Consolidated Statements of Operations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfShareholdersEquity" roleURI="http://www.wdc.com/role/ConsolidatedStatementsOfShareholdersEquity">
        <link:definition>1005000 - Statement - Consolidated Statements of Shareholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CoverPage" roleURI="http://www.wdc.com/role/CoverPage">
        <link:definition>0001000 - Document - Cover Page</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Debt" roleURI="http://www.wdc.com/role/Debt">
        <link:definition>2105100 - Disclosure - Debt</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtAdditionalInformationDetails" roleURI="http://www.wdc.com/role/DebtAdditionalInformationDetails">
        <link:definition>2405403 - Disclosure - Debt - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtDebtMaturitiesDetails" roleURI="http://www.wdc.com/role/DebtDebtMaturitiesDetails">
        <link:definition>2405404 - Disclosure - Debt - Debt Maturities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtScheduleOfDebtDetails" roleURI="http://www.wdc.com/role/DebtScheduleOfDebtDetails">
        <link:definition>2405402 - Disclosure - Debt - Schedule of Debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtScheduleOfDebtDetailsCalc2" roleURI="http://www.wdc.com/role/DebtScheduleOfDebtDetailsCalc2">
        <link:definition>2405402 - Disclosure - Debt - Schedule of Debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtTables" roleURI="http://www.wdc.com/role/DebtTables">
        <link:definition>2305301 - Disclosure - Debt (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativesInstrumentsAndHedgingActivities" roleURI="http://www.wdc.com/role/DerivativesInstrumentsAndHedgingActivities">
        <link:definition>2104100 - Disclosure - Derivatives Instruments and Hedging Activities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativesInstrumentsAndHedgingActivitiesAdditionalInformationDetails" roleURI="http://www.wdc.com/role/DerivativesInstrumentsAndHedgingActivitiesAdditionalInformationDetails">
        <link:definition>2404401 - Disclosure - Derivatives Instruments and Hedging Activities - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EmployeeTerminationAssetImpairmentAndOtherCharges" roleURI="http://www.wdc.com/role/EmployeeTerminationAssetImpairmentAndOtherCharges">
        <link:definition>2115100 - Disclosure - Employee Termination, Asset Impairment and Other Charges</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EmployeeTerminationAssetImpairmentAndOtherChargesAdditionalInformationDetails" roleURI="http://www.wdc.com/role/EmployeeTerminationAssetImpairmentAndOtherChargesAdditionalInformationDetails">
        <link:definition>2415403 - Disclosure - Employee Termination, Asset Impairment and Other Charges - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EmployeeTerminationAssetImpairmentAndOtherChargesBusinessRealignmentActivitiesDetails" roleURI="http://www.wdc.com/role/EmployeeTerminationAssetImpairmentAndOtherChargesBusinessRealignmentActivitiesDetails">
        <link:definition>2415405 - Disclosure - Employee Termination, Asset Impairment and Other Charges - Business Realignment Activities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EmployeeTerminationAssetImpairmentAndOtherChargesClosureOfForeignManufacturingFacilitiesDetails" roleURI="http://www.wdc.com/role/EmployeeTerminationAssetImpairmentAndOtherChargesClosureOfForeignManufacturingFacilitiesDetails">
        <link:definition>2415404 - Disclosure - Employee Termination, Asset Impairment and Other Charges - Closure of Foreign Manufacturing Facilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EmployeeTerminationAssetImpairmentAndOtherChargesExpenseRecognitionDetails" roleURI="http://www.wdc.com/role/EmployeeTerminationAssetImpairmentAndOtherChargesExpenseRecognitionDetails">
        <link:definition>2415402 - Disclosure - Employee Termination, Asset Impairment and Other Charges - Expense Recognition (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EmployeeTerminationAssetImpairmentAndOtherChargesTables" roleURI="http://www.wdc.com/role/EmployeeTerminationAssetImpairmentAndOtherChargesTables">
        <link:definition>2315301 - Disclosure - Employee Termination, Asset Impairment and Other Charges (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsAndInvestments" roleURI="http://www.wdc.com/role/FairValueMeasurementsAndInvestments">
        <link:definition>2103100 - Disclosure - Fair Value Measurements and Investments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsAndInvestmentsAdditionalInformationDetails" roleURI="http://www.wdc.com/role/FairValueMeasurementsAndInvestmentsAdditionalInformationDetails">
        <link:definition>2403405 - Disclosure - Fair Value Measurements and Investments - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsAndInvestmentsCashAndMarketableSecuritiesDetails" roleURI="http://www.wdc.com/role/FairValueMeasurementsAndInvestmentsCashAndMarketableSecuritiesDetails">
        <link:definition>2403402 - Disclosure - Fair Value Measurements and Investments - Cash and Marketable Securities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsAndInvestmentsDebtInstrumentFairValueDetails" roleURI="http://www.wdc.com/role/FairValueMeasurementsAndInvestmentsDebtInstrumentFairValueDetails">
        <link:definition>2403404 - Disclosure - Fair Value Measurements and Investments - Debt Instrument Fair Value (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsAndInvestmentsFinancialAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetail" roleURI="http://www.wdc.com/role/FairValueMeasurementsAndInvestmentsFinancialAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetail">
        <link:definition>2403403 - Disclosure - Fair Value Measurements and Investments - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsAndInvestmentsTables" roleURI="http://www.wdc.com/role/FairValueMeasurementsAndInvestmentsTables">
        <link:definition>2303301 - Disclosure - Fair Value Measurements and Investments (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAndOtherIntangibleAssets" roleURI="http://www.wdc.com/role/GoodwillAndOtherIntangibleAssets">
        <link:definition>2106100 - Disclosure - Goodwill and Other Intangible Assets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAndOtherIntangibleAssetsAdditionalInformationDetails" roleURI="http://www.wdc.com/role/GoodwillAndOtherIntangibleAssetsAdditionalInformationDetails">
        <link:definition>2406404 - Disclosure - Goodwill and Other Intangible Assets - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAndOtherIntangibleAssetsGoodwillDetails" roleURI="http://www.wdc.com/role/GoodwillAndOtherIntangibleAssetsGoodwillDetails">
        <link:definition>2406402 - Disclosure - Goodwill and Other Intangible Assets - Goodwill (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAndOtherIntangibleAssetsIntangibleAssetAmortizationDetails" roleURI="http://www.wdc.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetAmortizationDetails">
        <link:definition>2406405 - Disclosure - Goodwill and Other Intangible Assets - Intangible Asset Amortization (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAndOtherIntangibleAssetsIntangibleAssetFutureAmortizationDetails" roleURI="http://www.wdc.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetFutureAmortizationDetails">
        <link:definition>2406406 - Disclosure - Goodwill and Other Intangible Assets - Intangible Asset Future Amortization (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAndOtherIntangibleAssetsIntangibleAssetsDetails" roleURI="http://www.wdc.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsDetails">
        <link:definition>2406403 - Disclosure - Goodwill and Other Intangible Assets - Intangible Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAndOtherIntangibleAssetsTables" roleURI="http://www.wdc.com/role/GoodwillAndOtherIntangibleAssetsTables">
        <link:definition>2306301 - Disclosure - Goodwill and Other Intangible Assets (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxExpense" roleURI="http://www.wdc.com/role/IncomeTaxExpense">
        <link:definition>2113100 - Disclosure - Income Tax Expense</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxExpenseAdditionalInformationDetails" roleURI="http://www.wdc.com/role/IncomeTaxExpenseAdditionalInformationDetails">
        <link:definition>2413404 - Disclosure - Income Tax Expense - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxExpenseComponentsOfProvisionForIncomeTaxesDetails" roleURI="http://www.wdc.com/role/IncomeTaxExpenseComponentsOfProvisionForIncomeTaxesDetails">
        <link:definition>2413403 - Disclosure - Income Tax Expense - Components of Provision for Income Taxes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxExpenseDeferredTaxAssetsAndLiabilitiesDetails" roleURI="http://www.wdc.com/role/IncomeTaxExpenseDeferredTaxAssetsAndLiabilitiesDetails">
        <link:definition>2413405 - Disclosure - Income Tax Expense - Deferred Tax Assets and Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxExpenseDomesticAndForeignComponentsOfIncomeBeforeIncomeTaxesDetails" roleURI="http://www.wdc.com/role/IncomeTaxExpenseDomesticAndForeignComponentsOfIncomeBeforeIncomeTaxesDetails">
        <link:definition>2413402 - Disclosure - Income Tax Expense - Domestic and Foreign Components of Income Before Income Taxes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxExpenseNolCarryforwardDetails" roleURI="http://www.wdc.com/role/IncomeTaxExpenseNolCarryforwardDetails">
        <link:definition>2413407 - Disclosure - Income Tax Expense - NOL Carryforward (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxExpenseReconciliationOfUSFederalStatutoryRateDetails" roleURI="http://www.wdc.com/role/IncomeTaxExpenseReconciliationOfUSFederalStatutoryRateDetails">
        <link:definition>2413406 - Disclosure - Income Tax Expense - Reconciliation of the U.S. Federal statutory rate (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxExpenseTables" roleURI="http://www.wdc.com/role/IncomeTaxExpenseTables">
        <link:definition>2313301 - Disclosure - Income Tax Expense (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxExpenseUnrecognizedTaxBenefitsDetails" roleURI="http://www.wdc.com/role/IncomeTaxExpenseUnrecognizedTaxBenefitsDetails">
        <link:definition>2413408 - Disclosure - Income Tax Expense - Unrecognized Tax Benefits (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LegalProceedings" roleURI="http://www.wdc.com/role/LegalProceedings">
        <link:definition>2116100 - Disclosure - Legal Proceedings</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LegalProceedingsAdditionalInformationDetails" roleURI="http://www.wdc.com/role/LegalProceedingsAdditionalInformationDetails">
        <link:definition>2416401 - Disclosure - Legal Proceedings - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetIncomeLossPerCommonShare" roleURI="http://www.wdc.com/role/NetIncomeLossPerCommonShare">
        <link:definition>2114100 - Disclosure - Net Income (Loss) Per Common Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetIncomeLossPerCommonShareAdditionalInformationDetails" roleURI="http://www.wdc.com/role/NetIncomeLossPerCommonShareAdditionalInformationDetails">
        <link:definition>2414402 - Disclosure - Net Income (Loss) Per Common Share - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetIncomeLossPerCommonShareTables" roleURI="http://www.wdc.com/role/NetIncomeLossPerCommonShareTables">
        <link:definition>2314301 - Disclosure - Net Income (Loss) Per Common Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OrganizationAndBasisOfPresentationAdditionalInformationDetails" roleURI="http://www.wdc.com/role/OrganizationAndBasisOfPresentationAdditionalInformationDetails">
        <link:definition>2401402 - Disclosure - Organization and Basis of Presentation - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OrganizationAndBasisOfPresentationNotes" roleURI="http://www.wdc.com/role/OrganizationAndBasisOfPresentationNotes">
        <link:definition>2101100 - Disclosure - Organization and Basis of Presentation (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OrganizationAndBasisOfPresentationPolicies" roleURI="http://www.wdc.com/role/OrganizationAndBasisOfPresentationPolicies">
        <link:definition>2201201 - Disclosure - Organization and Basis of Presentation (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OrganizationAndBasisOfPresentationRemainingPerformanceObligationDetails" roleURI="http://www.wdc.com/role/OrganizationAndBasisOfPresentationRemainingPerformanceObligationDetails">
        <link:definition>2401403 - Disclosure - Organization and Basis of Presentation - Remaining Performance Obligation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionsAndOtherPostRetirementBenefitPlans" roleURI="http://www.wdc.com/role/PensionsAndOtherPostRetirementBenefitPlans">
        <link:definition>2107100 - Disclosure - Pensions and Other Post-retirement Benefit Plans</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionsAndOtherPostRetirementBenefitPlansAdditionalInformationDetails" roleURI="http://www.wdc.com/role/PensionsAndOtherPostRetirementBenefitPlansAdditionalInformationDetails">
        <link:definition>2407404 - Disclosure - Pensions and Other Post-retirement Benefit Plans - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionsAndOtherPostRetirementBenefitPlansDefinedBenefitPensionPlansMajorAssetCategoriesAndTheirAssociatedFairValuesDetails" roleURI="http://www.wdc.com/role/PensionsAndOtherPostRetirementBenefitPlansDefinedBenefitPensionPlansMajorAssetCategoriesAndTheirAssociatedFairValuesDetails">
        <link:definition>2407407 - Disclosure - Pensions and Other Post-retirement Benefit Plans - Defined Benefit Pension Plans' Major Asset Categories and Their Associated Fair Values (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionsAndOtherPostRetirementBenefitPlansObligationsAndFundedStatusDetails" roleURI="http://www.wdc.com/role/PensionsAndOtherPostRetirementBenefitPlansObligationsAndFundedStatusDetails">
        <link:definition>2407402 - Disclosure - Pensions and Other Post-retirement Benefit Plans - Obligations and Funded Status (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionsAndOtherPostRetirementBenefitPlansTables" roleURI="http://www.wdc.com/role/PensionsAndOtherPostRetirementBenefitPlansTables">
        <link:definition>2307301 - Disclosure - Pensions and Other Post-retirement Benefit Plans (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionsAndOtherPostRetirementBenefitPlansUnfundedAmountsRecognizedOnConsolidatedBalanceSheetsDetails" roleURI="http://www.wdc.com/role/PensionsAndOtherPostRetirementBenefitPlansUnfundedAmountsRecognizedOnConsolidatedBalanceSheetsDetails">
        <link:definition>2407403 - Disclosure - Pensions and Other Post-retirement Benefit Plans - Unfunded Amounts Recognized on Consolidated Balance Sheets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionsAndOtherPostRetirementBenefitPlansWeightedAverageActuarialAssumptionsUsedToDetermineBenefitCostsDetails" roleURI="http://www.wdc.com/role/PensionsAndOtherPostRetirementBenefitPlansWeightedAverageActuarialAssumptionsUsedToDetermineBenefitCostsDetails">
        <link:definition>2407406 - Disclosure - Pensions and Other Post-retirement Benefit Plans - Weighted-Average Actuarial Assumptions used to Determine Benefit Costs (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionsAndOtherPostRetirementBenefitPlansWeightedAverageActuarialAssumptionsUsedToDetermineBenefitObligationsDetails" roleURI="http://www.wdc.com/role/PensionsAndOtherPostRetirementBenefitPlansWeightedAverageActuarialAssumptionsUsedToDetermineBenefitObligationsDetails">
        <link:definition>2407405 - Disclosure - Pensions and Other Post-retirement Benefit Plans - Weighted-Average Actuarial Assumptions used to Determine Benefit Obligations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="QuarterlyResultsOfOperationsUnaudited" roleURI="http://www.wdc.com/role/QuarterlyResultsOfOperationsUnaudited">
        <link:definition>2118100 - Disclosure - Quarterly Results of Operations (unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="QuarterlyResultsOfOperationsUnauditedSummaryOfQuarterlyResultsDetails" roleURI="http://www.wdc.com/role/QuarterlyResultsOfOperationsUnauditedSummaryOfQuarterlyResultsDetails">
        <link:definition>2418402 - Disclosure - Quarterly Results of Operations (unaudited) Summary of Quarterly Results (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="QuarterlyResultsOfOperationsUnauditedTables" roleURI="http://www.wdc.com/role/QuarterlyResultsOfOperationsUnauditedTables">
        <link:definition>2318301 - Disclosure - Quarterly Results of Operations (unaudited) (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RecentlyAccountingPronouncements" roleURI="http://www.wdc.com/role/RecentlyAccountingPronouncements">
        <link:definition>2102100 - Disclosure - Recently Accounting Pronouncements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RecentlyAccountingPronouncementsAdditionalInformationDetails" roleURI="http://www.wdc.com/role/RecentlyAccountingPronouncementsAdditionalInformationDetails">
        <link:definition>2402401 - Disclosure - Recently Accounting Pronouncements - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SeparateFinancialInformationOfGuarantorSubsidiaries" roleURI="http://www.wdc.com/role/SeparateFinancialInformationOfGuarantorSubsidiaries">
        <link:definition>2117100 - Disclosure - Separate Financial Information of Guarantor Subsidiaries</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SeparateFinancialInformationOfGuarantorSubsidiariesBalanceSheetDetails" roleURI="http://www.wdc.com/role/SeparateFinancialInformationOfGuarantorSubsidiariesBalanceSheetDetails">
        <link:definition>2417402 - Disclosure - Separate Financial Information of Guarantor Subsidiaries - Balance Sheet (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SeparateFinancialInformationOfGuarantorSubsidiariesStatementOfCashFlowsDetails" roleURI="http://www.wdc.com/role/SeparateFinancialInformationOfGuarantorSubsidiariesStatementOfCashFlowsDetails">
        <link:definition>2417405 - Disclosure - Separate Financial Information of Guarantor Subsidiaries - Statement of Cash Flows (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SeparateFinancialInformationOfGuarantorSubsidiariesStatementOfComprehensiveIncomeLossDetails" roleURI="http://www.wdc.com/role/SeparateFinancialInformationOfGuarantorSubsidiariesStatementOfComprehensiveIncomeLossDetails">
        <link:definition>2417404 - Disclosure - Separate Financial Information of Guarantor Subsidiaries - Statement of Comprehensive Income (Loss) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SeparateFinancialInformationOfGuarantorSubsidiariesStatementOfOperationsDetails" roleURI="http://www.wdc.com/role/SeparateFinancialInformationOfGuarantorSubsidiariesStatementOfOperationsDetails">
        <link:definition>2417403 - Disclosure - Separate Financial Information of Guarantor Subsidiaries - Statement of Operations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SeparateFinancialInformationOfGuarantorSubsidiariesTables" roleURI="http://www.wdc.com/role/SeparateFinancialInformationOfGuarantorSubsidiariesTables">
        <link:definition>2317301 - Disclosure - Separate Financial Information of Guarantor Subsidiaries (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquity" roleURI="http://www.wdc.com/role/ShareholdersEquity">
        <link:definition>2112100 - Disclosure - Shareholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquity2017PerformanceIncentivePlanAndEsppDetails" roleURI="http://www.wdc.com/role/ShareholdersEquity2017PerformanceIncentivePlanAndEsppDetails">
        <link:definition>2412402 - Disclosure - Shareholders' Equity - 2017 Performance Incentive Plan and ESPP (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityDividendsDetails" roleURI="http://www.wdc.com/role/ShareholdersEquityDividendsDetails">
        <link:definition>2412408 - Disclosure - Shareholders' Equity - Dividends (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityFairValueAssumptionsUsedForStockOptionsGrantedDetails" roleURI="http://www.wdc.com/role/ShareholdersEquityFairValueAssumptionsUsedForStockOptionsGrantedDetails">
        <link:definition>2412409 - Disclosure - Shareholders' Equity - Fair Value Assumptions Used For Stock Options Granted (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityFairValuesAssumptionsUserForEmployeeStockPurchasePlanGrantedDetails" roleURI="http://www.wdc.com/role/ShareholdersEquityFairValuesAssumptionsUserForEmployeeStockPurchasePlanGrantedDetails">
        <link:definition>2412410 - Disclosure - Shareholders' Equity - Fair Values Assumptions User For Employee Stock Purchase Plan Granted (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityRestrictedStockUnitsAndPerformanceShareUnitsDetails" roleURI="http://www.wdc.com/role/ShareholdersEquityRestrictedStockUnitsAndPerformanceShareUnitsDetails">
        <link:definition>2412406 - Disclosure - Shareholders' Equity - Restricted Stock Units And Performance Share Units (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityShareRepurchaseProgramDetails" roleURI="http://www.wdc.com/role/ShareholdersEquityShareRepurchaseProgramDetails">
        <link:definition>2412407 - Disclosure - Shareholders' Equity - Share Repurchase Program (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityStockBasedCompensationExpenseDetails" roleURI="http://www.wdc.com/role/ShareholdersEquityStockBasedCompensationExpenseDetails">
        <link:definition>2412403 - Disclosure - Shareholders' Equity - Stock-Based Compensation Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityStockOptionActivityDetails" roleURI="http://www.wdc.com/role/ShareholdersEquityStockOptionActivityDetails">
        <link:definition>2412405 - Disclosure - Shareholders' Equity - Stock Option Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityStockReservedForIssuanceDetails" roleURI="http://www.wdc.com/role/ShareholdersEquityStockReservedForIssuanceDetails">
        <link:definition>2412411 - Disclosure - Shareholders' Equity - Stock Reserved for Issuance (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityTables" roleURI="http://www.wdc.com/role/ShareholdersEquityTables">
        <link:definition>2312301 - Disclosure - Shareholders' Equity (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareholdersEquityUnrecognizedShareBasedCompensationDetails" roleURI="http://www.wdc.com/role/ShareholdersEquityUnrecognizedShareBasedCompensationDetails">
        <link:definition>2412404 - Disclosure - Shareholders' Equity - Unrecognized Share-based Compensation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalFinancialStatementData" roleURI="http://www.wdc.com/role/SupplementalFinancialStatementData">
        <link:definition>2102100 - Disclosure - Supplemental Financial Statement Data</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalFinancialStatementDataAccumulatedOtherComprehensiveIncomeRollForwardDetails" roleURI="http://www.wdc.com/role/SupplementalFinancialStatementDataAccumulatedOtherComprehensiveIncomeRollForwardDetails">
        <link:definition>2402408 - Disclosure - Supplemental Financial Statement Data - Accumulated Other Comprehensive Income Roll Forward (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalFinancialStatementDataAdditionalInformationDetails" roleURI="http://www.wdc.com/role/SupplementalFinancialStatementDataAdditionalInformationDetails">
        <link:definition>2402402 - Disclosure - Supplemental Financial Statement Data - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalFinancialStatementDataInventoryDetails" roleURI="http://www.wdc.com/role/SupplementalFinancialStatementDataInventoryDetails">
        <link:definition>2402403 - Disclosure - Supplemental Financial Statement Data - Inventory (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalFinancialStatementDataOtherLiabilitiesDetails" roleURI="http://www.wdc.com/role/SupplementalFinancialStatementDataOtherLiabilitiesDetails">
        <link:definition>2402407 - Disclosure - Supplemental Financial Statement Data - Other Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalFinancialStatementDataPropertyPlantAndEquipmentDetails" roleURI="http://www.wdc.com/role/SupplementalFinancialStatementDataPropertyPlantAndEquipmentDetails">
        <link:definition>2402404 - Disclosure - Supplemental Financial Statement Data - Property, Plant and Equipment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalFinancialStatementDataTables" roleURI="http://www.wdc.com/role/SupplementalFinancialStatementDataTables">
        <link:definition>2302301 - Disclosure - Supplemental Financial Statement Data (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalFinancialStatementDataTotalWarrantyAccrualDetails" roleURI="http://www.wdc.com/role/SupplementalFinancialStatementDataTotalWarrantyAccrualDetails">
        <link:definition>2402406 - Disclosure - Supplemental Financial Statement Data - Total Warranty Accrual (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalFinancialStatementDataWarrantyAccrualRollForwardDetails" roleURI="http://www.wdc.com/role/SupplementalFinancialStatementDataWarrantyAccrualRollForwardDetails">
        <link:definition>2402405 - Disclosure - Supplemental Financial Statement Data - Warranty Accrual Roll Forward (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="WesternDigitalCorporation401KPlan" roleURI="http://www.wdc.com/role/WesternDigitalCorporation401KPlan">
        <link:definition>2111100 - Disclosure - Western Digital Corporation 401(k) Plan</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="WesternDigitalCorporation401KPlanAdditionalInformationDetails" roleURI="http://www.wdc.com/role/WesternDigitalCorporation401KPlanAdditionalInformationDetails">
        <link:definition>2411401 - Disclosure - Western Digital Corporation 401(k) Plan - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element abstract="true" id="wdc_AccumulatedOtherComprehensiveIncomeLossRollForward" name="AccumulatedOtherComprehensiveIncomeLossRollForward" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_AccumulatedOtherComprehensiveIncomeRollforwardAbstract" name="AccumulatedOtherComprehensiveIncomeRollforwardAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_AfterAmendmentMember" name="AfterAmendmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_AggregateValueOfRestrictedStockAwardsVested" name="AggregateValueOfRestrictedStockAwardsVested" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_AppleInc.Member" name="AppleInc.Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_ArtificialInflationInThePricePubliclyTradedCommonStockMember" name="ArtificialInflationInThePricePubliclyTradedCommonStockMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_BalanceSheetInformationAxis" name="BalanceSheetInformationAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_BusinessRealignmentActivitiesMember" name="BusinessRealignmentActivitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_CashPremiumOnExtinguishmentOfDebt" name="CashPremiumOnExtinguishmentOfDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_CashandMarketableSecuritiesAbstract" name="CashandMarketableSecuritiesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_ChangeInIndefiniteReinvestmentAssertionOfStateTaxCreditsMember" name="ChangeInIndefiniteReinvestmentAssertionOfStateTaxCreditsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_ClientDevicesMember" name="ClientDevicesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_ClientSolutionsMember" name="ClientSolutionsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_ClosureofForeignManufacturingFacilitiesMember" name="ClosureofForeignManufacturingFacilitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_CommonStockValues" name="CommonStockValues" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="wdc_CompanyContributionsVestPeriod" name="CompanyContributionsVestPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_ComputerEquipmentandSoftwareMember" name="ComputerEquipmentandSoftwareMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_ConversionofStockCashAcquired" name="ConversionofStockCashAcquired" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="wdc_ConvertibleNoteHedgeAmount" name="ConvertibleNoteHedgeAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_ConvertibleSeniorNotesDueTwoThousandTwentyMemberMember" name="ConvertibleSeniorNotesDueTwoThousandTwentyMemberMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_Convertibledebtactivitynet" name="Convertibledebtactivitynet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_CorporatenoteandbondsecuritiesMember" name="CorporatenoteandbondsecuritiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_CostsAssociatedWithUnderutilizedCapacityAsAResultOfATemporaryAbnormalReductionInProduction" name="CostsAssociatedWithUnderutilizedCapacityAsAResultOfATemporaryAbnormalReductionInProduction" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_DataCenterDevicesSolutionsMember" name="DataCenterDevicesSolutionsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_DebtCovenantPeriodAxis" name="DebtCovenantPeriodAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_DebtCovenantPeriodDomain" name="DebtCovenantPeriodDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_DebtInstrumentBasisSpreadonVariableRateFloor" name="DebtInstrumentBasisSpreadonVariableRateFloor" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="wdc_DebtInstrumentRequiredQuarterlyPrincipalPaymentPercent" name="DebtInstrumentRequiredQuarterlyPrincipalPaymentPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="wdc_DeferredTaxAssetsProjectedEffectiveRateAtWhichPositionWillReverse" name="DeferredTaxAssetsProjectedEffectiveRateAtWhichPositionWillReverse" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="wdc_DeferredTaxLiabilitiesProjectedEffectiveRateAtWhichPositionWillReverse" name="DeferredTaxLiabilitiesProjectedEffectiveRateAtWhichPositionWillReverse" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="wdc_DeferredTaxLiabilityIncreaseDecreasePurchaseAccountingIntangibles" name="DeferredTaxLiabilityIncreaseDecreasePurchaseAccountingIntangibles" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="wdc_DeferredTaxLiabilityIncreaseDecreaseUndistributedEarningsOfForeignSubsidiaries" name="DeferredTaxLiabilityIncreaseDecreaseUndistributedEarningsOfForeignSubsidiaries" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="wdc_DefinedBenefitPlanEstimatedAnnualBenefitsPaymentPeriod" name="DefinedBenefitPlanEstimatedAnnualBenefitsPaymentPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_DellInc.Member" name="DellInc.Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_DividendsDeclared" name="DividendsDeclared" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_DomesticTaxAuthorityPost2017ActGenerationMember" name="DomesticTaxAuthorityPost2017ActGenerationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_DomesticTaxAuthorityPre2017ActGenerationMember" name="DomesticTaxAuthorityPre2017ActGenerationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_EffectiveIncomeTaxRateReconciliationForeignDerivedIntangibleIncomePercent" name="EffectiveIncomeTaxRateReconciliationForeignDerivedIntangibleIncomePercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_EffectiveIncomeTaxRateReconciliationForeignMinimumTaxPercent" name="EffectiveIncomeTaxRateReconciliationForeignMinimumTaxPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_EffectiveIncomeTaxRateReconciliationReorganizationPercent" name="EffectiveIncomeTaxRateReconciliationReorganizationPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017ChangeinTaxRateDeferredTaxesPercent" name="EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017ChangeinTaxRateDeferredTaxesPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017MandatoryDeemedReparationTaxPercent" name="EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017MandatoryDeemedReparationTaxPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_EffectiveIncomeTaxRateReconciliationUnremittedEarningsofNonU.S.EntitiesPercent" name="EffectiveIncomeTaxRateReconciliationUnremittedEarningsofNonU.S.EntitiesPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_EmployeeServiceSharebasedCompensationUnrecognizedCostsTableTextBlock" name="EmployeeServiceSharebasedCompensationUnrecognizedCostsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_EmployeeServiceSharebasedCompensationUnrecognizedServiceCostsLineItems" name="EmployeeServiceSharebasedCompensationUnrecognizedServiceCostsLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_EmployeeServiceSharebasedCompensationUnrecognizedServiceCostsTable" name="EmployeeServiceSharebasedCompensationUnrecognizedServiceCostsTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_EmployeeStockPurchasePlanMember" name="EmployeeStockPurchasePlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_EmployeeTerminationBenefitsAndOtherChargesDisclosureTextBlock" name="EmployeeTerminationBenefitsAndOtherChargesDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_Employeeterminationassetimpairmentandothercharges" name="Employeeterminationassetimpairmentandothercharges" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="wdc_EntityWideAccountsReceivableMajorCustomerPercentage" name="EntityWideAccountsReceivableMajorCustomerPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="wdc_EquityCommingledMutualFundsMember" name="EquityCommingledMutualFundsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_EquityMethodInvestorNameAxis" name="EquityMethodInvestorNameAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_EquityMethodInvestorNameDomain" name="EquityMethodInvestorNameDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_EuropeMiddleEastAndAfricaMember" name="EuropeMiddleEastAndAfricaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_ExistingTechnologyMember" name="ExistingTechnologyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_FactoredReceivablesMember" name="FactoredReceivablesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_FiniteLivedIntangibleAssetsTransferredInFromOutToIndefiniteLivedIntangibleAssets" name="FiniteLivedIntangibleAssetsTransferredInFromOutToIndefiniteLivedIntangibleAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_FlashAllianceLtdMember" name="FlashAllianceLtdMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_FlashForwardLtdMember" name="FlashForwardLtdMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_FlashPartnersLtdMember" name="FlashPartnersLtdMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_FlashVenturesMember" name="FlashVenturesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_FlashbasedMember" name="FlashbasedMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_FormFactorAxis" name="FormFactorAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_FormFactorDomain" name="FormFactorDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_FourPointSeventyFivePercentSeniorUnsecuredNotesDueTwoThousandTwentySixMember" name="FourPointSeventyFivePercentSeniorUnsecuredNotesDueTwoThousandTwentySixMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_GuaranteeObligationsMaximumExposureThereafter" name="GuaranteeObligationsMaximumExposureThereafter" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="wdc_GuaranteeObligationsMaximumExposureYearFive" name="GuaranteeObligationsMaximumExposureYearFive" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="wdc_GuaranteeObligationsMaximumExposureYearFour" name="GuaranteeObligationsMaximumExposureYearFour" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="wdc_GuaranteeObligationsMaximumExposureYearOne" name="GuaranteeObligationsMaximumExposureYearOne" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="wdc_GuaranteeObligationsMaximumExposureYearThree" name="GuaranteeObligationsMaximumExposureYearThree" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="wdc_GuaranteeObligationsMaximumExposureYearTwo" name="GuaranteeObligationsMaximumExposureYearTwo" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="wdc_HDDMember" name="HDDMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_HuaweiInvestmentAndHoldingCompanyMember" name="HuaweiInvestmentAndHoldingCompanyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_IncomeTaxDisclosureLineItems" name="IncomeTaxDisclosureLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_IncomeTaxDisclosureTable" name="IncomeTaxDisclosureTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_IncomeTaxExaminationEstimateofPossibleLossResultingFromTransferPricingAdjustments" name="IncomeTaxExaminationEstimateofPossibleLossResultingFromTransferPricingAdjustments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="wdc_IntercompanyPayableCurrent" name="IntercompanyPayableCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="wdc_IntercompanyReceivableNetCurrent" name="IntercompanyReceivableNetCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="wdc_Intercompanyloanstofromconsolidatedsubsidiaries" name="Intercompanyloanstofromconsolidatedsubsidiaries" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="wdc_Intercompanyoperatingexpenseincome" name="Intercompanyoperatingexpenseincome" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="wdc_InvestmentFundingCommitments" name="InvestmentFundingCommitments" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="wdc_LeaseholdInterestsMember" name="LeaseholdInterestsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_LesseeOperatingLeaseLeasePaymentDueYearOne" name="LesseeOperatingLeaseLeasePaymentDueYearOne" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="wdc_LesseeOperatingLeaseLeasePaymentPercentAnnualIncrease" name="LesseeOperatingLeaseLeasePaymentPercentAnnualIncrease" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_LesseeOperatingLeaseNumberOfRenewalOptions" name="LesseeOperatingLeaseNumberOfRenewalOptions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_LongtermInvestmentsFairValueDisclosure" name="LongtermInvestmentsFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="wdc_MunicipalNotesAndBondsMember" name="MunicipalNotesAndBondsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_NetCashReceivedInSettlementOfPaidInAdvanceForStockRepurchaseContracts" name="NetCashReceivedInSettlementOfPaidInAdvanceForStockRepurchaseContracts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="wdc_NonCashPortionOfEmployeeTerminationBenefitsAndOtherCharges" name="NonCashPortionOfEmployeeTerminationBenefitsAndOtherCharges" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="wdc_NotesReceivableAndInvestmentsInRelatedParties" name="NotesReceivableAndInvestmentsInRelatedParties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="wdc_NotesReceivableAndInvestmentsInRelatedPartiesTableTextBlock" name="NotesReceivableAndInvestmentsInRelatedPartiesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_NumberOfSharesToBeIssuedForEveryOneShareActuallyIssuedInConnectionWithAward" name="NumberOfSharesToBeIssuedForEveryOneShareActuallyIssuedInConnectionWithAward" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="wdc_OffBalanceSheetGuaranteeMember" name="OffBalanceSheetGuaranteeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_OnePointFiftyPercentSeniorConvertibleNotesDueTwoThousandTwentyFourMember" name="OnePointFiftyPercentSeniorConvertibleNotesDueTwoThousandTwentyFourMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_OperatingLossAndTaxCreditCarryforwardsAmount" name="OperatingLossAndTaxCreditCarryforwardsAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="wdc_OtherComprehensiveIncomeLossNetofTaxPolicyTextBlock" name="OtherComprehensiveIncomeLossNetofTaxPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodAndAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax" name="OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodAndAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="wdc_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodAndAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetofTax" name="OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodAndAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetofTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_OtherIntangibleMember" name="OtherIntangibleMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_OtherMember" name="OtherMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_OtherMiscellaniousLiabilitiesNoncurrent" name="OtherMiscellaniousLiabilitiesNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="wdc_OutstandingAwardsAndSharesAvailableForAwardMember" name="OutstandingAwardsAndSharesAvailableForAwardMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_PartnersOwnershipInVentureBusiness" name="PartnersOwnershipInVentureBusiness" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="wdc_PaymentOfPrincipalAmortizationMember" name="PaymentOfPrincipalAmortizationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_PaymentsForLongTermLoansForRelatedParties" name="PaymentsForLongTermLoansForRelatedParties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_PeriodAfterJuly12022Member" name="PeriodAfterJuly12022Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_PeriodEndingDecember312021Member" name="PeriodEndingDecember312021Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_PeriodEndingJuly12022Member" name="PeriodEndingJuly12022Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_PeriodEndingJuly22021Member" name="PeriodEndingJuly22021Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_PeriodEndingOctober202020Member" name="PeriodEndingOctober202020Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_PostTaxMember" name="PostTaxMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_PreTaxMember" name="PreTaxMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_PrepaymentsOfFutureDepreciationMember" name="PrepaymentsOfFutureDepreciationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_PriorServiceCreditsForDefinedBenefitPensionPlansIncludedInAccumulatedOtherComprehensiveIncomeAtBalanceSheetDate" name="PriorServiceCreditsForDefinedBenefitPensionPlansIncludedInAccumulatedOtherComprehensiveIncomeAtBalanceSheetDate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="wdc_ProceedsFromLongTermLoansForRelatedParties" name="ProceedsFromLongTermLoansForRelatedParties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_PurchaseOptionExercisePriceMember" name="PurchaseOptionExercisePriceMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_RatioOfTotalAdjustedEBITDAToInterestExpenseMinimum" name="RatioOfTotalAdjustedEBITDAToInterestExpenseMinimum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="instant" />
  <xsd:element id="wdc_RatioOfTotalIndebtednessToAdjustedEBITDAMaximum" name="RatioOfTotalIndebtednessToAdjustedEBITDAMaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="instant" />
  <xsd:element id="wdc_RelatedCostsAndFairValuesBasedOnQuotedMarketPricesTableTextBlock" name="RelatedCostsAndFairValuesBasedOnQuotedMarketPricesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_RemainingGuaranteeObligationsTableTextBlock" name="RemainingGuaranteeObligationsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_RestrictedStockUnitsAndPerformanceShareUnitsMember" name="RestrictedStockUnitsAndPerformanceShareUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_RestructuringPlanMember" name="RestructuringPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_RevenuebyEndMarketAbstract" name="RevenuebyEndMarketAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_RevenuefromExternalCustomersbyEndMarketsTableTextBlock" name="RevenuefromExternalCustomersbyEndMarketsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_SaleLeasebackofCaliforniaManufacturingFacilityMember" name="SaleLeasebackofCaliforniaManufacturingFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_SanDiskMember" name="SanDiskMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_ScheduleOfCommitmentsContingenciesAndGuaranteesTable" name="ScheduleOfCommitmentsContingenciesAndGuaranteesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_SelectProductWarrantyTimePeriod" name="SelectProductWarrantyTimePeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_ShareBasedCompensationArrangementByShareBasedPaymentAwardsEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardsEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_ShareBasedCompensationFairValueAssumptionsPostVestingTerminationRate" name="ShareBasedCompensationFairValueAssumptionsPostVestingTerminationRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_ShareRepurchaseProgramMember" name="ShareRepurchaseProgramMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_SharebasedCompensationFairValueAssumptionsSuboptimalExerciseFactor" name="SharebasedCompensationFairValueAssumptionsSuboptimalExerciseFactor" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_ShorttermInvestmentsFairValueDisclosure" name="ShorttermInvestmentsFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="wdc_StandardProductWarrantyTimePeriod" name="StandardProductWarrantyTimePeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_StateTaxCreditsNetOfCurrentYearUtilizationMember" name="StateTaxCreditsNetOfCurrentYearUtilizationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_StockRepurchaseProgramEffectiveUntilFebruary32020Member" name="StockRepurchaseProgramEffectiveUntilFebruary32020Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_StockRepurchaseProgramEffectiveUntilJuly252023Member" name="StockRepurchaseProgramEffectiveUntilJuly252023Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_SummarizedTableOfAllSharesOfCommonStockReservedForIssuanceTableTableTextBlock" name="SummarizedTableOfAllSharesOfCommonStockReservedForIssuanceTableTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_SupplementalFinancialInformationLineItems" name="SupplementalFinancialInformationLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_SupplementalFinancialInformationTable" name="SupplementalFinancialInformationTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_TaxCutsAndJobsActOf2017ChangeInTaxRateIncomeTaxExpenseBenefitIncompleteAccountingProvisionalAmount" name="TaxCutsAndJobsActOf2017ChangeInTaxRateIncomeTaxExpenseBenefitIncompleteAccountingProvisionalAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="wdc_TaxCutsAndJobsActOf2017MeasurementPeriodAdjustmentTransitionTaxForAccumulatedForeignEarningsLiability" name="TaxCutsAndJobsActOf2017MeasurementPeriodAdjustmentTransitionTaxForAccumulatedForeignEarningsLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="wdc_TaxCutsAndJobsActOf2017MeasurementPeriodAdjustmentTransitionTaxForAccumulatedForeignEarningsLiabilityFavorableFinalRegulation" name="TaxCutsAndJobsActOf2017MeasurementPeriodAdjustmentTransitionTaxForAccumulatedForeignEarningsLiabilityFavorableFinalRegulation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="wdc_TaxCutsAndJobsActOf2017MeasurementPeriodAdjustmentTransitionTaxForAccumulatedForeignEarningsLiabilityUtilizationOfDeferredTaxAsset" name="TaxCutsAndJobsActOf2017MeasurementPeriodAdjustmentTransitionTaxForAccumulatedForeignEarningsLiabilityUtilizationOfDeferredTaxAsset" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="wdc_TaxCutsAndJobsActOf2017MeasurementPeriodAdjustmentTransitionTaxForAccumulatedForeignEarningsLiabilityUtilizationOfDeferredTaxAssetIncomeTaxExpenseBenefit" name="TaxCutsAndJobsActOf2017MeasurementPeriodAdjustmentTransitionTaxForAccumulatedForeignEarningsLiabilityUtilizationOfDeferredTaxAssetIncomeTaxExpenseBenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="wdc_TaxCutsAndJobsActOf2017MeasurementPeriodAdjustmentTransitionTaxForAccumulatedForeignEarningsLiabilityUtilizationOfExistingOperatingLosses" name="TaxCutsAndJobsActOf2017MeasurementPeriodAdjustmentTransitionTaxForAccumulatedForeignEarningsLiabilityUtilizationOfExistingOperatingLosses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="wdc_TaxCutsAndJobsActOf2017TransitionTaxForAccumulatedForeignEarningsIncomeTaxExpenseBenefitIncompleteAccountingProvisionalAmount" name="TaxCutsAndJobsActOf2017TransitionTaxForAccumulatedForeignEarningsIncomeTaxExpenseBenefitIncompleteAccountingProvisionalAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="wdc_TaxCutsAndJobsActOf2017UnrecognizedTaxBenefits" name="TaxCutsAndJobsActOf2017UnrecognizedTaxBenefits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="wdc_TaxCutsandJobsActof2017TransitionTaxforAccumulatedForeignEarningsLiabilityIncompleteAccountingProvisionalAmount" name="TaxCutsandJobsActof2017TransitionTaxforAccumulatedForeignEarningsLiabilityIncompleteAccountingProvisionalAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_TaxScenarioAxis" name="TaxScenarioAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_TaxScenarioDomain" name="TaxScenarioDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_TaxYear2008Through2009Member" name="TaxYear2008Through2009Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_TaxYears2010Through2012Member" name="TaxYears2010Through2012Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_TaxesPaidOnVestedStockAwardsUnderEmployeeStockPlans" name="TaxesPaidOnVestedStockAwardsUnderEmployeeStockPlans" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_TermLoanA1Member" name="TermLoanA1Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_TopTenCustomersMember" name="TopTenCustomersMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_ToshibaMemoryCorporationMember" name="ToshibaMemoryCorporationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_TotalCashAndCashEquivalentsAndDebtSecuritiesAvailableforsale" name="TotalCashAndCashEquivalentsAndDebtSecuritiesAvailableforsale" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="wdc_TradenamesandtrademarksMember" name="TradenamesandtrademarksMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_U.S.TermLoanB4Member" name="U.S.TermLoanB4Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_UnisVentureMember" name="UnisVentureMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_UnissoftWuxiGroupCoLtd.Member" name="UnissoftWuxiGroupCoLtd.Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="wdc_VariableInterestEntityMaximumLossExposureTableTextBlock" name="VariableInterestEntityMaximumLossExposureTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="wdc_WesternDigitalCorpMember" name="WesternDigitalCorpMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
