Ownership Submission
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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(Print or Type Responses)
1. Name and Address of Reporting Person *
BEHRENDT PETER D
   2. Issuer Name and Ticker or Trading Symbol
WESTERN DIGITAL CORP [WDC] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
C/O WESTERN DIGITAL CORPORATION, 20511 LAKE FOREST DRIVE		 3. Date of Earliest Transaction (Month/Day/Year)
12/22/2005
(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 12/22/2005   M   7,500 A $ 13.625 28,631 D  
Common Stock 12/22/2005   M   937 A $ 3.9375 29,568 D  
Common Stock 12/22/2005   M   5,000 A $ 11.61 34,568 D  
Common Stock 12/22/2005   S   12,000 D $ 18.6 22,568 D  
Common Stock 12/22/2005   S   1,437 D $ 18.62 21,131 D  
Common Stock               250 I by Son
Common Stock               250 I by Son 2
Common Stock               250 I by Son 3

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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
Non-Qualified Stock Option (right to buy) $ 3.9375 12/22/2005   M     937 11/18/2000(1) 11/18/2009 Common Stock 937 $ 0 0 D  
Non-Qualified Stock Option (right to buy) $ 11.61 12/22/2005   M     5,000 11/20/2004(2) 11/20/2013 Common Stock 5,000 $ 0 5,000 D  
Non-Qualified Stock Option (right to buy) $ 13.625 12/22/2005   M     7,500 11/05/1999(1) 11/05/2008 Common Stock 7,500 $ 0 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
BEHRENDT PETER D
C/O WESTERN DIGITAL CORPORATION
20511 LAKE FOREST DRIVE
LAKE FOREST, CA 92630-7741		   X      

Signatures

 By: /s/ Sandra Garcia Attorney-in-Fact For: Peter D. Behrendt   12/23/2005
**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) The option vested 25% on the first anniversary of the grant date and 6.25% at the end of each three-month period thereafter.
(2) The option vested 25% one year from the grant date of 11/20/2003, and an additional 6.25% vested each three-month period through 11/20/2005. The remaining shares subject to the option will vest at 6.25% each three-month period until fully vested on 11/20/2007.

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