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 *
COYNE JOHN F
   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)
Executive VP & COO
(Last)
(First)
(Middle)
C/O WESTERN DIGITAL CORPORATION, 20511 LAKE FOREST DRIVE		 3. Date of Earliest Transaction (Month/Day/Year)
02/16/2006
(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 02/16/2006   M   3,682 A $ 12.25 390,441 D  
Common Stock 02/16/2006   M   4,688 A $ 3.85 395,129 D  
Common Stock 02/16/2006   M   9,374 A $ 12.84 404,503 D  
Common Stock 02/16/2006   M   4,625 A $ 8.89 409,128 D  
Common Stock 02/16/2006   S   2,669 D $ 23.92 406,459 D  
Common Stock 02/16/2006   S   12,400 D $ 23.85 394,059 D  
Common Stock 02/16/2006   S   7,300 D $ 23.8 386,759 D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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 02/16/2006   M     4,688 09/23/2003(1) 09/23/2012 Common Stock 4,688 $ 0 14,062 D  
Employee Stock Option (right to buy) $ 8.89 02/16/2006   M     4,625 11/09/2005(2) 11/09/2014 Common Stock 4,625 $ 0 41,250 D  
Employee Stock Option (right to buy) $ 12.25 02/16/2006   M     3,682 08/06/2005(3) 08/06/2008 Common Stock 3,682 $ 0 0 D  
Employee Stock Option (right to buy) $ 12.84 02/16/2006   M     9,374 10/24/2004(4) 10/24/2013 Common Stock 9,374 $ 0 21,875 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
COYNE JOHN F
C/O WESTERN DIGITAL CORPORATION
20511 LAKE FOREST DRIVE
LAKE FOREST, CA 92630-7741		       Executive VP & COO  

Signatures

 By: /s/ Sandra Garcia Attorney-in-Fact For: John F. Coyne   02/16/2006
**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% one year from the grant date of 9/23/2002, and an additional 6.25% vested at the end of each three-month period through 12/23/2005. The remaining shares subject to the option will vest at 6.25% at the end of each three-month period until fully vested on 9/23/2006.
(2) The option vested 25% one year from the grant date of 11/9/2004, and an additional 6.25% vested each three-month period through 2/9/2006. The remaining shares subject to the option will vest at 6.25% at the end of each three-month period until fully vested on 11/9/2008.
(3) The option vested 100% seven years from the grant date.
(4) The option vested 25% one year from the grant date of 10/24/2003, and an additional 6.25% vested each three-month period through 1/24/2006. The remaining shares subject to the option will vest at 6.25% each three-month period until fully vested on 10/24/2007.

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