LAKE FOREST, Calif. - April 5, 2005 - Western Digital Corp. (NYSE: WDC) today announced that the company will release its financial results for the fiscal third quarter ended April 1, 2005, after the close of market on the NYSE on Thurs., April 21, 2005. The investment community conference call to discuss these results and the company's outlook will be broadcast live over the Internet that day at 2 p.m. PDT/5 p.m. EDT. The call will be accessible live and on an archived basis via the link below:

• Audio Webcast: www.westerndigital.com/invest -- click on "Conference Calls"
  
• Telephone Replay: 866.346.1329 (toll-free) or 203.369.0001 (international)

About WD
WD, one of the storage industry's pioneers and long-time leaders, provides products and services for people and organizations that collect, manage and use digital information. The company produces reliable, high-performance hard drives that keep users' data close-at-hand and secure from loss.

WD was founded in 1970. The company's storage products are marketed to leading systems manufacturers and selected resellers under the Western Digital and WD brand names. Visit the Investor section of the company's Web site (www.westerndigital.com) to access a variety of financial and investor information.