FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person *   MURPHY JAMES J 2. Date of Event Requiring Statement (Month/Day/Year) 08/16/2010 3. Issuer Name and Ticker or Trading Symbol WESTERN DIGITAL CORP [WDC] (Last) (First) (Middle) C/O WESTERN DIGITAL CORPORATION, 20511 LAKE FOREST DRIVE 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP, WWS & Sales Ops 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) LAKE FOREST, CA 92630-7741 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common Stock 41,697 D Â

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Employee Stock Option (right to buy)	02/04/2010(1)	02/04/2016	Common Stock	56,576	$ 16.85	D	Â
Employee Stock Option (right to buy)	11/08/2007(2)	11/08/2016	Common Stock	3,551	$ 19.4	D	Â
Employee Stock Option (right to buy)	09/12/2008(3)	09/12/2014	Common Stock	7,399	$ 23.46	D	Â
Employee Stock Option (right to buy)	09/11/2009(4)	09/11/2015	Common Stock	21,330	$ 23.78	D	Â
Employee Stock Option (right to buy)	02/06/2009(5)	02/06/2015	Common Stock	11,375	$ 28.09	D	Â
Employee Stock Option (right to buy)	09/10/2010(6)	09/10/2016	Common Stock	17,213	$ 35.75	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
MURPHY JAMES J C/O WESTERN DIGITAL CORPORATION 20511 LAKE FOREST DRIVE LAKE FOREST, CA 92630-7741	Â	Â	  EVP, WWS & Sales Ops	Â

Signatures

By: /s/ Sandra Garcia Attorney-in-Fact For: James J. Murphy		08/23/2010
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	The option vested 25% one year from the grant date of February 4, 2009, and an additional 6.25% vested at the end of each three-month period through August 4, 2010. The remaining shares subject to the option will vest at 6.25% at the end of each three-month period until fully vested on February 4, 2013.
(2)	The option vested 25% one year from the grant date of November 8, 2006, and an additional 6.25% vested at the end of each three-month period through August 8, 2010. The remaining shares subject to the option will vest in full on November 8, 2010.
(3)	The option vested 25% one year from the grant date of September 12, 2007, and an additional 6.25% vested at the end of each three-month period through June 12, 2010. The remaining shares subject to the option will vest at 6.25% at the end of each three-month period until fully vested on September 12, 2011.
(4)	The option vested 25% one year from the grant date of September 11, 2008, and an additional 6.25% vested at the end of each three-month period through June 11, 2010. The remaining shares subject to the option will vest at 6.25% at the end of each three-month period until fully vested on September 11, 2012.
(5)	The option vested 25% one year from the grant date of February 6, 2008, and an additional 6.25% vested at the end of each three-month period through August 6, 2010. The remaining shares subject to the option will vest at 6.25% at the end of each three-month period until fully vested on February 6, 2012.
(6)	The option vests 25% on the first anniversary of the grant date and 6.25% at the end of each three-month period thereafter.

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