1 EXHIBIT 10.22.2 [THE IRVINE COMPANY LOGO/LETTERHEAD] December 21, 1999 Mr. Charles A. Haggerty Chairman of the Board President & Chief Executive Officer Western Digital Corporation 8105 Irvine Center Drive Irvine, CA 92618 Dear Chuck: I am in receipt of your letter dated December 20, 1999 wherein you ask that we defer the date by which Western Digital must notify The Irvine Company of your desire to extend the lease term. This letter shall serve to modify our existing agreement (Second Amendment to Lease) dated January 6, 1999 as follows: (i) in that the "Commitment Notice" must be received by Landlord no later than January 28, 2000 and (ii) the Term of the lease shall be extended to expire on midnight January 31, 2001. Chuck, to the extent that your lease status can be resolved in January, we may well be able to backfill floors 8-15 given the current level of tenant demand for space and the lack of mid-rise office space in Irvine Spectrum. For example, the former AT&T building adjacent to your headquarters is now 98% leased with prospects to go to 100% in the next sixty days. It would be our desire to stage your downsizing to occur from the lowest floor (8) first, and move up in a contiguous fashion. We believe this would enable us to lease this space faster than if we have to lease from 15 down. To be effective, we need to receive a signed copy of this letter agreement prior to December 31, 1999. 2 Mr. Charles A. Haggerty December 21, 1999 Page Two Best wishes for a Happy Holiday Season Sincerely, /s/ Richard G. Sim The above Terms are agreed to by: -------------- RGS:cf cc: William R. Halford Western Digital Corporation James Stiepan By: /s/ Charles A. Haggerty 12-22-99 ------------------------ It's Authorized officer