EXHIBIT 99.2




                           CERTIFICATION PURSUANT TO
                            18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                 SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned hereby certifies, in his capacity as Chief Financial Officer of
Western Digital Corporation (the "Company"), for purposes of 18 U.S.C. Section
1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that
to the best of his knowledge:

      -     the Quarterly Report of the Company on Form 10-Q for the period
            ended December 27, 2002 (the "Report") fully complies with the
            requirements of Section 13(a) or Section 15(d) of the Securities
            Exchange Act of 1934; and

      -     the information contained in the Report fairly presents, in all
            material respects, the financial condition and results of operations
            of the Company.


Dated:  February 7, 2003


                                                     /s/   Scott Mercer
                                                     ---------------------------
                                                     D. Scott Mercer
                                                     Chief Financial Officer