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                                            Filing Pursuant to Rule 424(b)(2)
                                            Registration Statement No. 333-70785



                           PROSPECTUS SUPPLEMENT NO. 6
                       (TO PROSPECTUS DATED APRIL 6, 1999)

                                  83,582 Shares


                                     WESTERN
                                     DIGITAL

                                  COMMON STOCK

                              --------------------


         You should read this prospectus supplement and the accompanying
prospectus carefully before you invest. Both documents contain information you
should consider when making your investment decision.

         SEE "RISK FACTORS" BEGINNING ON PAGE 2 OF THE PROSPECTUS AND THOSE
INCORPORATED BY REFERENCE FROM OUR 10-Q FILED WITH THE SECURITIES AND EXCHANGE
COMMISSION ON NOVEMBER 16, 1999 TO READ ABOUT FACTORS YOU SHOULD CONSIDER BEFORE
BUYING SHARES OF OUR COMMON STOCK.

                                         Issue Price
                                         -----------

     Per Share                             $ 4-3/16

     Total                                 $350,000


         NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY OTHER REGULATORY
BODY HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE ACCURACY
OR ADEQUACY OF THE PROSPECTUS OR THIS PROSPECTUS SUPPLEMENT. ANY REPRESENTATION
TO THE CONTRARY IS A CRIMINAL OFFENSE.



          The date of this prospectus supplement is November 30, 1999.


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                              PLAN OF DISTRIBUTION

         As partial consideration for settlement of a lawsuit which alleged
infringement of several patents by Western Digital, we are issuing to the holder
of the patents 83,582 shares of our common stock pursuant to this prospectus
supplement. The aggregate value of the common stock offered hereby, as of
November 29, 1999, was $350,000 or $4-3/16 per share, which was the closing
price of our common stock on the New York Stock Exchange on that date. We will
not pay any commissions or other compensation in connection with this issuance
of our common stock.

                                 USE OF PROCEEDS

         We will not receive any proceeds from the issuance of the common stock
pursuant to this prospectus supplement.

                           MARKET FOR OUR COMMON STOCK

         On November 29, 1999, the last reported sales price of our common stock
on the New York Stock Exchange was $4-3/16 per share. Our common stock is traded
on the New York Stock Exchange under the symbol "WDC." The common stock issued
under this prospectus supplement will be listed on the New York Stock Exchange.

         As of November 27, 1999 and before the issuance of shares pursuant to
this prospectus supplement, we had 127,126,676 shares of common stock
outstanding.

                                     GENERAL

         You should rely only on the information provided or incorporated by
reference in this prospectus supplement and the prospectus. We have not
authorized anyone else to provide you with additional or different information.
You should not assume that the information in this prospectus supplement is
accurate as of any date other than the date on the front page of this document.


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                                TABLE OF CONTENTS



PROSPECTUS SUPPLEMENT
     Plan of Distribution...................................................S-2
     Use of Proceeds........................................................S-2
     Market for Our Common Stock............................................S-2
     General................................................................S-2

PROSPECTUS
     Western Digital Corporation..............................................2
     Risk Factors.............................................................2
     Use of Proceeds..........................................................9
     Plan of Distribution.....................................................9
     Where You Can Find More Information.....................................10
     Forward-Looking Statements..............................................11
     Legal Matters...........................................................12
     Independent Auditors....................................................12


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