WD REACHES AGREEMENT WITH TOSHIBA CORPORATION TO DIVEST CERTAIN 3.5-INCH HDD ASSETS

Kuala Lumpur – 5 March 2012 –Western Digital Corp. (NYSE: WDC) today reported that it has reached an agreement with Toshiba Corporation to divest certain assets to address the requirements of regulatory agencies that have conditionally approved or are continuing to review the company’s planned acquisition of Hitachi Global Storage Technologies (HGST). The asset package covered by the agreement will enable Toshiba to manufacture and sell 3.5-inch hard drives for the desktop and consumer electronics markets and will enhance its ability to manufacture and sell 3.5-inch hard drives for near-line (business critical) applications. The divestiture transaction is subject to review by regulatory agencies in certain jurisdictions.

WD also reported that it has agreed, subject to completion of the divestiture transaction, to purchase Toshiba Storage Device (Thailand) Company Limited (TSDT). TSDT manufactured hard drives but has not resumed operations after the recent Thailand flooding. The principal assets of TSDT are its Thailand property, facilities and employees. Subject to completion of the transaction, WD plans to integrate these facilities and employees into its Thailand operations. The financial terms of the two agreements were not disclosed.

The closing of the transactions with Toshiba is conditioned on WD’s closing of its planned acquisition of HGST, which remains subject to several closing conditions, including the receipt of certain remaining antitrust approvals. Subject to obtaining these approvals, the company is targeting the transactions with Toshiba to close in March 2012.