**Exhibit 10.58**
**MUTUAL GENERAL RELEASE AND GLOBAL SETTLEMENT AGREEMENT**
     This Mutual General Release and Global Settlement Agreement (the “Agreement”) is entered intobetween Maxtor Corporation (“Maxtor”) and Quantum Corporation (“Quantum”), collectively referred toas the Parties, and is effective as of December 23, 2004.
**RECITALS**
     A. WHEREAS, the Parties entered into an agreement effective as of March 19, 2003 (the“Standstill Agreement”) which Standstill Agreement was subsequently amended eleven times, the lastof which amendment was effective November 30, 2004;
     B. WHEREAS, Paragraph 11 of the Standstill Agreement contains a global settlement option whichQuantum has elected to exercise subject to certain modifications as set forth in this Agreement;
     NOW, THEREFORE, for good and valuable consideration, the Parties agree as follows:
     1. Quantum hereby exercises its global settlement option under Paragraph 11, subparagraphs(i)-(v) of the Standstill Agreement, subject to the modifications set forth below.
 a.  The parties waive the requirement that Quantum deliver written noticeto Maxtor as described in paragraph 11 of the Standstill Agreement and agree thatby signing this Agreement, Quantum has effectively exercised the election underparagraph 11 of the Standstill Agreement.  b.  Maxtor shall have no obligation to make any filings with the IRS toobtain any payroll tax refunds in connection with payroll tax payments made byQuantum with respect to former Quantum employees transferred to Maxtor.  c.  Quantum shall be entitled to receive any refund, and shall beresponsible for any deficiency, including interest, with respect to the resolutionof the Internal Revenue Service audit of Quantum for the fiscal years ending March31, 1997 through and including March 31, 1999: provided, however, that if the Form870 previously signed by Quantum is subsequently rejected by the United StatesGovernment, then Maxtor shall be responsible for negotiating a new agreement (withthe cooperation of Quantum) and Maxtor shall be responsible for any resulting taxliability pursuant to the terms of the Tax Sharing and Indemnity Agreement amongQuantum, Maxtor and Insula Corporation dated April 2, 2001 (“Tax SharingAgreement”) prior to modification by this Agreement.  d.  Section 1 of the Tax Sharing Agreement shall be terminated in itsentirety.  e.  Maxtor’s liability under Section 3(a) of the Tax Sharing Agreement fromthe date hereof shall not exceed $8,760,000; provided that in all other respectsSection 3(a) shall remain in effect. Sections 3(c) and 3(d) of the Tax SharingAgreement shall not be terminated or otherwise affected by this Agreement.Quantum’s agreement to this limitation of liability under Section 3(a) of the TaxSharing Agreement is
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    conditioned on the following: (i) Maxtor’s acknowledgment hereby that the itemsdetailed on the spreadsheet attached as Exhibit A are subject to indemnification byMaxtor; and (ii) Maxtor’s representation hereby that it is not aware of any claimsthat it may be obligated to indemnify Quantum for pursuant to Section 3(a) of theTax Sharing Agreement, other than the items detailed on the spreadsheet attached asExhibit A.  f.  Maxtor and Quantum will continue to pay one-half (1/2) of the letter ofcredit fees as more fully set forth in Paragraph 8 of the Standstill Agreementuntil such time as the letter of credit is released.  g.  Maxtor and Quantum shall jointly control the Quantum Internal RevenueService audit for the fiscal years ending March 31, 2000 through and includingMarch 31, 2002, and shall share equally the costs and fees associated with suchdefense. Maxtor’s costs and expenses incurred under this Section 1(g) will not actto reduce or otherwise affect the liability cap provided in Section 1(e) of thisAgreement. Maxtor intends to use Gray Cary and David Colker to assist with thedefense of this audit, and Quantum consents to such representation.  h.  Maxtor and Quantum shall negotiate in good faith during the firstquarter of calendar year 2005 a “buy out” by Maxtor of its limited indemnityobligation set forth in Paragraph 1(e) above.
     2. The Parties hereby settle all “Claims” as defined in the first recital to the StandstillAgreement.
     3. Each Party agrees not to bring any further claims against the other Party under theTransitional Services Agreement among Quantum, Maxtor and Insula Corporation dated April 2, 2001,or under the Closing Implementation Agreement among Quantum, Maxtor and Insula Corporation datedApril 2, 2001, (the foregoing two agreements hereinafter being referred to as the “AgreementsSubject to Mutual Releases”).
     4. Maxtor hereby fully and forever releases and discharges Quantum and each of its agents,employees and affiliates, from (i) the Claims as defined in the first recital to the StandstillAgreement and (ii) any and all known, unknown, anticipated or unanticipated, suspected orunsuspected, fixed, conditional or contingent actions or causes of action at law or in equity,suits, debts, demands, claims, contracts, covenants, liens, liabilities, losses, costs, expenses ordamages of every kind, nature and description: (a) arising under the Agreements Subject to MutualReleases; (b) arising under Section 1 or Section 3(a) of the Tax Sharing Agreement, except claimsbrought to enforce the rights and obligations set forth in Paragraphs 1(a) through and including1(h) above; (c) relating to misallocated, non-transferred, or incorrectly transferred assets orliabilities, or challenges to any balance sheets (including without limitation claims regarding theamount of cash transferred) relating to the separation of the HDD and DSS businesses; and (d)concerning severance, stock options, restricted stock or reimbursement of payables arising in theordinary course of business relating to the separation of the HDD and DSS businesses.
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     5. Quantum hereby fully and forever releases and discharges Maxtor and each of its agents,employees and affiliates, from (i) the Claims as defined in the first recital to the StandstillAgreement and (ii) any and all known, unknown, anticipated or unanticipated, suspected orunsuspected, fixed, conditional, or contingent actions or causes of action at law or in equity,suits, debts, demands, claims, contracts, covenants, liens, liabilities, losses, costs, andexpenses or damages of every kind, nature and description: (a) arising under the Agreements Subjectto Mutual Releases; (b) arising under Section 1 or Section 3(a) of the Tax Sharing Agreement,except claims brought to enforce the rights and obligations set forth in Paragraphs 1(a) throughand including 1(h) above; (c) relating to misallocated, non-transferred, or incorrectly transferredassets or liabilities, or challenges to any balance sheets (including without limitation claimsregarding the amount of cash transferred) relating to the separation of the HDD and DSS businesses;and (d) concerning severance, stock options, restricted stock or reimbursement of payables arisingin the ordinary course of business relating to the separation of the HDD and DSS businesses.
     6. With respect to the covenants contained in Paragraphs 4 and 5 of this Agreement, each ofthe Parties hereto expressly understands and agrees that this Agreement fully and finally releasesand forever resolves the matters released and discharged in Paragraphs 4 and 5, including thosewhich may be unknown, unanticipated and/or unsuspected, and upon the advice of legal counsel, eachhereby expressly waives all benefits under Section 1542 of the California Civil Code as well asunder any other statutes or common law principles of similar effect, to the extent that suchbenefits may contravene the provisions of Paragraphs 4 and 5 of this Agreement. Each of theParties hereto acknowledges that it has read and understands Section 1542 of the California CivilCode, which provides as follows:
A GENERAL RELEASE DOES NOT EXTEND TO CLAIMS WHICH THE CREDITOR DOESNOT KNOW OR SUSPECT TO EXIST IN HIS FAVOR AT THE TIME OF EXECUTINGTHE RELEASE, WHICH IF KNOWN BY HIM MUST HAVE MATERIALLY AFFECTED HISSETTLEMENT WITH THE DEBTOR.
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     7. This Agreement will be binding upon and will inure to the benefit of the successors,assignees, and transferees of the Parties. Each Party represents (i) that it has the requisitecorporate power and authority to enter into this Agreement and to consummate the transactionscontemplated hereunder, and (ii) that the execution and delivery of this Agreement and theconsummation of the transactions contemplated hereby have been duly authorized by all necessarycorporate action on the part of such Party.
     8. This Agreement is governed by California law. The Parties acknowledge and agree that thisAgreement is a confidential settlement document and is subject to all protections and privilegesapplicable to confidential settlement documents under the laws of California, any other state, orthe United States. The terms of this Agreement are confidential and may not be disclosed ordescribed to anyone other than the Parties or their legal advisors, except as required by law or toenforce the terms of this Agreement; a Party will be given reasonable prior notice if the otherParty is required to disclose the terms of this Agreement.
     9. This Agreement may be executed into counterparts, each of which shall be deemed to be anoriginal, but all of which will constitute one and the same Agreement.
     **In Witness Whereof**, the Parties have executed this Agreement as of the date firstwritten above.
Quantum Corporation
By: /s/ Shawn D. Hall