FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN 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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1. Name and Address of Reporting Person * FINKBEINER MARTIN W.   2. Issuer Name and Ticker or Trading Symbol WESTERN DIGITAL CORP [WDC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP Operations (Last) (First) (Middle) C/O WESTERN DIGITAL CORPORATION, 20511 LAKE FOREST DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 12/02/2009 (Street) LAKE FOREST, CA 92630-7741 4. If Amendment, Date Original Filed(Month/Day/Year) 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 Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 12/02/2009   M   60,000 A $ 12.84 136,895 (1) D   Common Stock 12/02/2009   M   9,035 A $ 8.01 145,930 D   Common Stock 12/02/2009   M   6,462 A $ 24.18 152,392 D   Common Stock 12/02/2009   M   3,000 A $ 3.85 155,392 D   Common Stock 12/02/2009   S   78,497 D $ 39.0331 (2) 76,895 D   Common Stock 12/03/2009   M   965 A $ 8.01 77,860 D   Common Stock 12/03/2009   M   60,000 A $ 8.89 137,860 D   Common Stock 12/03/2009   S   60,965 D $ 39.0441 (3) 76,895 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Employee Stock Option (right to buy)

$ 3.85

12/02/2009

M

3,000

09/23/2003(4)

09/23/2012

Common Stock

3,000

$ 0

0

D

Employee Stock Option (right to buy)

$ 8.01

12/02/2009

M

9,035

09/03/2005(4)

09/03/2014

Common Stock

9,035

$ 0

965

D

Employee Stock Option (right to buy)

$ 8.01

12/03/2009

M

965

09/03/2005(4)

09/03/2014

Common Stock

965

$ 0

0

D

Employee Stock Option (right to buy)

$ 8.89

12/03/2009

M

60,000

11/09/2005(4)

11/09/2014

Common Stock

60,000

$ 0

0

D

Employee Stock Option (right to buy)

$ 12.84

12/02/2009

M

60,000

10/24/2004(4)

10/24/2013

Common Stock

60,000

$ 0

0

D

Employee Stock Option (right to buy)

$ 24.18

12/02/2009

M

6,462

02/17/2007(5)

02/17/2016

Common Stock

6,462

$ 0

431

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
FINKBEINER MARTIN W. C/O WESTERN DIGITAL CORPORATION 20511 LAKE FOREST DRIVE LAKE FOREST, CA 92630-7741			EVP Operations

Signatures

By: /s/ Sandra Garcia Attorney-in-Fact For: Martin W. Finkbeiner		12/04/2009
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(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)	Includes 2,891 shares acquired under the issuer's Employee Stock Purchase Plan on November 30, 2009.
(2)	Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $39 to a high of $39.19. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
(3)	Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $39 to a high of $39.17. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
(4)	The option vested 25% on the first anniversary of the grant date and 6.25% at the end of each three-month period thereafter.
(5)	The option vested 25% one year from the grant date of 2/16/2006, and an additional 6.25% vested at the end of each three-month period through 11/16/2009. The remaining shares subject to the option will vest at 6.25% at the end of each three-month period until fully vested on 2/16/2010.

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