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                                                                    EXHIBIT 10.6

                AMENDED AND RESTATED WESTERN DIGITAL CORPORATION

                NON-EMPLOYEE DIRECTORS RESTRICTED STOCK UNIT PLAN

                            Effective March 28, 2003
                  Amended and Restated as of November 18, 2004

1.    Purpose.

      The purpose of this Western Digital Corporation Non-Employee Directors
Restricted Stock Unit Plan is to enable the Company to make Awards to its
Non-employee Directors of Restricted Stock Units (each, as defined below), to
attract, retain and motivate its Non-employee Directors and to further align
their interests with the interests of the Company's other stockholders.

2.    Definitions.

      As used herein, the following terms shall have the meanings ascribed
thereto below:

      (a) "ACCOUNT" means an unfunded bookkeeping account maintained by the
Company for an Award to track vesting and value thereof pursuant to Section 5.

      (b) "ADMINISTRATOR" means the Board, unless the Board has delegated
authority to the Committee, in which event the Administrator shall mean the
Committee.

      (c) "AWARD" means an Initial Grant, an Annual Grant or a Partial Grant of
Restricted Stock Units under the Plan.

      (d) "BOARD" means the Board of Directors of the Company.

      (e) "COMMITTEE" means the Compensation Committee of the Board consisting
solely of two (2) or more Non-employee Directors.

      (f) "COMMON STOCK" means the common stock of the Company.

      (g) "COMPANY" means Western Digital Corporation, a Delaware corporation,
or any successor assuming or substituting Awards pursuant to Section 4(b)(iii).

      (h) "DEFERRED COMPENSATION PLAN" means the Company's Amended and Restated
Deferred Compensation Plan, as amended from time to time.

      (i) "DISABILITY" means a period of disability during which a Participant
qualifies for permanent disability benefits under the Company's long-term
disability plan, or, if the Participant does not participate in such a plan, a
period of disability during which the Participant would have qualified for
permanent disability benefits under such a plan had the Participant been a
participant in such a plan, as determined in the sole discretion of the
Administrator. If the Company does not sponsor such a plan, or discontinues to

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sponsor such a plan, Disability shall be determined by the Administrator in its
sole discretion.

      (j) "FAIR MARKET VALUE" per share of Common Stock, as of any date, means
the closing price for a share of Common Stock reported for that date on the New
York Stock Exchange (or such other national stock exchange or quotation system
on which shares of Common Stock are then listed or quoted) or, if no shares of
Common Stock are traded on the New York Stock Exchange (or such other stock
exchange or quotation system) on the date in question, then the closing price
for the next preceding date on which there was such a trade on the New York
Stock Exchange (or such other stock exchange or quotation system). If at any
time the Common Stock is no longer traded on a national stock exchange or
quotation system, the Fair Market Value of the Common Stock as of the date in
question shall be as determined by the Administrator in good faith.

      (k) "NON-EMPLOYEE DIRECTOR" means a director who is both a "non-employee
director" as defined in Rule 16b-3 under the Securities Exchange Act of 1934, as
amended, and an "outside director" within the meaning of Section 162(m) of the
Internal Revenue Code of 1986, as amended.

      (l) "NOTICE OF AWARD" shall mean a Notice of Award in the form established
from time to time by the Administrator setting forth the number of Restricted
Stock Units awarded thereunder.

      (m) "PARTICIPANT" means any Eligible Director to whom an Award has been
made.

      (n) "PLAN" means this Western Digital Corporation Non-Employee Directors
Restricted Stock Unit Plan, as amended from time to time.

      (o) "REMOVAL" means removal of a Participant from the Board, with or
without cause, in accordance with the Company's Certificate of Incorporation,
Bylaws or Delaware General Corporate Law.

      (p) "RESTRICTED STOCK UNIT" is an unfunded bookkeeping entry representing
the cash equivalent of the Fair Market Value of one share of Common Stock.

      (q) "45 DAY AVERAGE PRICE" shall mean the average of the Fair Market Value
of a share of Common Stock for the forty-five (45) trading days prior to and
including the applicable measurement date, subject, in the discretion of the
Administrator, to any adjustments for stock splits or other transactions
affecting the Common Stock during such period.

3.    Participation in the Plan.

      (a) Non-employee Directors of the Company ("Eligible Directors") shall be
eligible to participate in the Plan. Each Eligible Director shall, if required
by the Company, enter into an agreement with the Company in such form as the
Company shall determine consistent with the provisions of the Plan for purposes
of implementing the Plan or

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effecting its purposes. In the event of any inconsistency between the provisions
of the Plan and any such agreement, the provisions of the Plan shall govern.

4.    Credits

      (a) General. Upon the effectiveness of the Plan, the Company, shall grant
to each then Eligible Director 2,100 Restricted Stock Units (the "Initial
Grant," provided that Initial Grants made on or after January 1, 2005 shall
instead consist of 4,527 Restricted Stock Units), and shall grant to each
Eligible Director on each January 1 thereafter 2,100 Restricted Stock Units (the
"Annual Grant," provided that Annual Grants made on or after January 1, 2005
shall instead consist of 4,527 Restricted Stock Units). If a person first
becomes an Eligible Director at any time following the date of the effectiveness
of the Plan, the Company shall pro-rate the Initial Grant and grant such
Eligible Director the number of Restricted Stock Units equal to the product of
(i) the Initial Grant divided by 365 and (ii) the number of days from the date
such person became an Eligible Director to the date of the next Annual Grant (a
"Partial Grant"). The Company shall establish a separate Account for each Award.
No fractional Restricted Stock Units shall be granted, and any fractional
Restricted Stock Unit shall be rounded up to the nearest whole number. Each
Award shall be evidenced by a Notice of Award issued by the Company.

      (b) Additional Credits.

            (i) Whenever the Company shall pay any dividends (other than in
Common Stock) upon issued and outstanding Common Stock, or make any distribution
(other than in Common Stock) with respect thereto, there shall be credited to
each Account of a Participant a number of Restricted Stock Units determined by
multiplying the "fair value" of any dividend (or other distribution) made by the
Company with respect to one share of its Common Stock by the number of
Restricted Stock Units in that Account and then dividing that product by the
Fair Market Value of a share of Common Stock on the date of payment of such
dividend or distribution. In the case of a cash dividend or distribution, the
"fair value" thereof shall be the amount of such cash, and, in the case of any
other dividend or distribution, the "fair value" thereof shall be such amount as
shall be determined in good faith by the Administrator.

            (ii) If the Company pays any dividend or distribution upon its
issued and outstanding Common Stock payable in additional shares of such Common
Stock there shall be credited to each Account of a Participant a number of
Restricted Stock Units equal to the product obtained by multiplying (i) the
number of Restricted Stock Units in that Account at the time of payment of such
dividend or distribution by (ii) the number of shares of Common Stock issued as
a stock dividend or distribution by the Company with respect to one share of its
Common Stock.

            (iii) In the event of a stock split, reverse stock split,
recapitalization, reorganization, consolidation or like change in the capital
structure of the Company affecting the Common Stock not addressed by Section
4(b)(i) or 4(b)(ii), if the Administrator shall determine that such change
equitably requires an adjustment or adjustments in the number or kind of
Restricted Stock Units then allocated to

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Participants' Accounts, or other computations or amounts under the Plan based
upon Common Stock or its value, such adjustments shall be made by the
Administrator in its sole discretion and shall be conclusive and binding for all
purposes of the Plan. In the event of a liquidation of the Company, or a merger,
reorganization, or consolidation of the Company with any other corporation in
which the Company is not the surviving corporation or the Company becomes a
wholly-owned subsidiary of another corporation, if the surviving corporation in
any such merger, reorganization, or consolidation does not assume the Award or
agree to issue a substitute award in place thereof, then any unvested Restricted
Stock Units shall vest in full and become payable in accordance with Section
5(c) of the Plan immediately prior to such liquidation, merger, reorganization,
or consolidation.

            (iv) No fractional Restricted Stock Units shall be credited to an
Account pursuant to this Section 4(b), and any fractional Restricted Stock Unit
that otherwise would be credited shall be rounded up to the nearest whole
number.

      (c) Cessation of Credits. There shall be no further credits to an Account
after the Restricted Stock Units in such Account fully vest, or to any Account
or Accounts of a Participant after he or she ceases to be a director of the
Company for any reason.

5.    Vesting and Payment.

      (a) Vesting. Participants shall have no vested interest in Restricted
Stock Units prior to vesting thereof. Restricted Stock Units shall vest 100% on
the third anniversary of the date of the Award, provided that the Participant
has remained a director of the Company for the entire period from the date of
grant to the date of vesting. If a Participant has served as a director of the
Company for at least 48 continuous months and is at least 55 years old when such
director ceases to be a director of the Company for any reason other than
Removal (a "Retired Director"), all unvested Restricted Stock Units of such
Retired Director shall vest effective upon such director's termination as a
director of the Company and become payable in accordance with Section 5(c) of
the Plan. If a Participant ceases to be a director of the Company for any reason
other than Removal prior to being eligible to become a Retired Director, then
all of such Participant's unvested Restricted Stock Units granted within the
first twelve months immediately prior to the date of such termination shall
terminate without vesting; 1/3 of all of such Participant's unvested Restricted
Stock Units granted within the second twelve month period prior to such
termination shall immediately vest and become payable in accordance with Section
5(c) of the Plan; and 2/3 of all of such Participant's unvested Restricted Stock
Units granted within the third twelve month period prior to such termination
shall immediately vest and become payable in accordance with Section 5(c) of the
Plan. Any Restricted Stock Units that have not vested at the time of, or do not
vest upon, a Participant ceasing to be a director of the Company shall terminate
and be forfeited.

      (b) Acceleration upon Death or Disability. Notwithstanding Section 5(a),
if a Participant ceases to be a director of the Company due to death or
Disability, then,

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subject to Section 5(g), all of such Participant's Restricted Stock Units shall
immediately vest in full and become payable in accordance with Section 5(c) of
the Plan.

      (c) Payment Amount and Maximum Payment Amount. Subject to Sections 5(f)
and (g) herein, within fifteen (15) business days after the Restricted Stock
Units in an Account have vested, the Company shall pay to the Participant, in
cash, an amount equal to the product of the number of Restricted Stock Units in
that Account on the date of vesting and the 45 Day Average Price as of the date
of vesting (the "Payment Amount"), provided, however, that in no event shall the
Payment Amount for any Account exceed 200% of the value of the Account on the
date of the Award, with such value on the date of the Award calculated as the
product of the number of Restricted Stock Units in that Account on the date of
the Award and 45 Day Average Price as of the date of the Award. Notwithstanding
the foregoing, if a Participant ceases to be a director of the Company for any
reason other than death or Disability prior to being eligible to become a
Retired Director, in no event shall the Payment Amount for any Account of such
Participant that vests as a result of such termination exceed the value of the
Account on the date of the Award, with such value on the date of the Award
calculated as the product of the number of Restricted Stock Units in that
Account on the date of the Award and the 45 Day Average Price as of the date of
the Award.

      (d) Payments Only to the Director. Payments pursuant to the Plan shall be
made only to the Participant or his or her heirs or successors pursuant to
Section 11 upon his or her death.

      (e) Payments Only in Cash. All payments to Participants hereunder shall be
in cash.

      (f) Deferral. To the extent permitted under the Deferred Compensation
Plan, a Participant may elect to defer receipt of any or all payments due under
the Plan with respect to such Award. Such elections shall be made, and any such
deferral shall be effected and administered, in accordance with the Deferred
Compensation Plan.

6.    Administration.

      (a) Administrator. The Plan shall be administered by the Administrator,
which shall have the power to construe the Plan, to resolve all questions
arising under the Plan, to adopt and amend such rules and regulations for the
administration of the Plan as it may deem desirable, and otherwise to carry out
the terms of the Plan, but only to the extent not contrary to the express
provisions of the Plan. The determinations, interpretations, and other actions
of the Administrator of or under the Plan or with respect to any Restricted
Stock Units granted pursuant to the Plan shall be final and binding for all
purposes on all persons. None of the Administrator, the Company nor any officer
or employee thereof shall be liable for any action or determination taken or
made under the Plan in good faith.

      (b) Amendment, Modification, Suspension and Termination of the Plan. The
Board may from time to time in its discretion amend, modify, suspend, or
terminate, in whole or in part, any or all provisions of the Plan, including but
not limited to modifying the

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vesting periods for the Restricted Stock Units to provide for shorter or longer
vesting period or the number of Restricted Stock Units granted. The Board may
amend, modify, suspend or terminate outstanding Awards, provided, however,
outstanding Awards shall not be amended, modified, suspended or terminated in
such a manner as to impair any rights of the recipient of the Award without the
consent of such recipient. If any such amendment or modification to an
outstanding Award reduces the vesting period, then any election that had been
made to defer receipt of any or all payments due under the Plan with respect to
such Award pursuant to the Deferred Compensation Plan shall be disregarded.

7.    Taxes.

      The Company shall be authorized to withhold from any grant, credit,
payment or settlement of Restricted Stock Units the amount of any taxes required
to be withheld in respect of such grant, payment or settlement or any credit of
dividend equivalents under such Restricted Stock Units or under the Plan and to
take such other action as may be necessary in the opinion of the Administrator
to satisfy all obligations for the payment of such taxes.

8.    No Rights as a Stockholder.

      Participants shall have no dividend, voting, or any other rights as a
stockholder of the Company with respect to any Restricted Stock Unit.

9.    No Property Rights.

      The grant of an Award pursuant to the Plan shall not be deemed the grant
of a property interest in any assets of the Company. An Award evidences only a
general obligation of the Company to comply with the terms and conditions of the
Plan and make payments in accordance with the Plan from the assets of the
Company that are available for the satisfaction of obligations to creditors. The
Company shall not segregate any assets in respect of any Award or Account. The
rights of the recipient of Restricted Stock Units to benefits under the Plan
shall be solely those of a general, unsecured creditor of the Company.

10.   Reorganization.

      The receipt of an Award under the Plan shall not affect the right of the
Company to reclassify, recapitalize or otherwise change its capital or debt
structure or to merge, consolidate, convey any or all of its assets, dissolve,
liquidate, windup or otherwise reorganize.

11.   Assignment.

      No right or interest to or in the Plan, or any payment or benefit to a
Participant shall be assignable by the Participant except by will or the laws of
descent and distribution. No right, benefit or interest of the Participant
hereunder shall be subject to anticipation, alienation, sale, assignment,
encumbrance, charge, pledge, hypothecation or

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set off in respect of any claim, debt or obligation, or to execution,
attachment, levy or similar process or assignment by operation of law. Any
attempt, voluntarily or involuntarily, to effect any action specified in the
immediately preceding sentences shall, to the full extent permitted by law, be
null, void and of no effect; provided, however, that this provision shall not
preclude a Participant hereunder from designating one or more beneficiaries to
receive any amount that may be payable to the Participant after his or her death
and shall not preclude the legal representatives of the Participant's estate
from assigning any right hereunder to the person or persons entitled thereto
under his or her will, or, in the case of intestacy, to the person or persons
entitled thereto under the laws of intestacy applicable to his or her estate.

12.   No Right to Continued Board Membership.

      The grant of Restricted Stock Units shall not be construed as giving a
Participant the right to be retained as a director of the Company. The Board may
at any time fail or refuse to nominate a Participant for election to the Board,
the stockholders of the Company may at any election fail or refuse to elect any
Participant to the Board, or a Participant may be subject to Removal, in each
case, free from any liability or claim under the Plan or any Restricted Stock
Unit except as expressly set forth herein.

13.   Effective Date and Duration of the Plan.

      The Plan shall be effective April 1, 2003. The Plan shall terminate upon
the approval of the Board. Deferral elections pursuant to Section 5(f) may be
made under the Plan prior to its effectiveness, but no issuances under the Plan
shall be made before its effectiveness or after its termination.

14.   Invalid Provisions.

      If any provision of the Plan is held to be illegal, invalid or
unenforceable under present or future laws effective during the term of the
Plan, such provision shall be fully severable; the Plan shall be construed and
enforced as if such illegal, invalid or unenforceable provision had never been a
part of the Plan; and the remaining provisions of the Plan shall remain in full
force and effect and shall not be affected by the illegal, invalid or
unenforceable provision or severance from the Plan. Furthermore, in lieu of such
illegal, invalid or unenforceable provision there shall be added automatically
as part of the Plan a provision as similar in terms to such illegal, invalid or
unenforceable provision as is possible and still be legal, valid and
enforceable.

15.   Governing Laws.

      The Plan and all rights and obligations under the Plan shall be construed
in accordance with and governed by the laws of the State of California,
excluding its conflicts of laws principles.

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