Ownership Submission
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 *
  WELSH JAMES K
 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 & GM, Branded Products
 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 42,948
D
 

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 49,504 $ 16.85 D  
Employee Stock Option (right to buy) 11/08/2007(2) 11/08/2016 Common Stock 1,894 $ 19.4 D  
Employee Stock Option (right to buy) 09/12/2008(3) 09/12/2014 Common Stock 7,708 $ 23.46 D  
Employee Stock Option (right to buy) 09/11/2009(4) 09/11/2015 Common Stock 19,197 $ 23.78 D  
Employee Stock Option (right to buy) 02/06/2009(5) 02/06/2015 Common Stock 9,751 $ 28.09 D  
Employee Stock Option (right to buy) 09/10/2010(6) 09/10/2016 Common Stock 20,655 $ 35.75 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
WELSH JAMES K
C/O WESTERN DIGITAL CORPORATION
20511 LAKE FOREST DRIVE
LAKE FOREST, CA 92630-7741		       EVP & GM, Branded Products  

Signatures

By: /s/ Sandra Garcia Attorney-in-Fact For: James K. Welsh 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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