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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 QzfG1kdOq0xyPln+gZWgBkI/K8t2KdmEAwAdz52gb03wXfVs39RT6Y0S6/t4ANsI
 VQS+SNd5uYYjADlYpJG/UA==

<SEC-DOCUMENT>0000709283-05-000027.txt : 20050413
<SEC-HEADER>0000709283-05-000027.hdr.sgml : 20050413
<ACCEPTANCE-DATETIME>20050413203413
ACCESSION NUMBER:		0000709283-05-000027
CONFORMED SUBMISSION TYPE:	3/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050131
FILED AS OF DATE:		20050413
DATE AS OF CHANGE:		20050413

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			QUANTUM CORP /DE/
		CENTRAL INDEX KEY:			0000709283
		STANDARD INDUSTRIAL CLASSIFICATION:	COMPUTER STORAGE DEVICES [3572]
		IRS NUMBER:				942665054
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0331

	BUSINESS ADDRESS:	
		STREET 1:		1650 TECHNOLOGY DR
		STREET 2:		SUITE 800
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95110
		BUSINESS PHONE:		4089444000

	MAIL ADDRESS:	
		STREET 1:		1650 TECHNOLOGY DR
		STREET 2:		SUITE 800
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95110

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Wold Jim
		CENTRAL INDEX KEY:			0001316395

	FILING VALUES:
		FORM TYPE:		3/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13449
		FILM NUMBER:		05749342

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		408-944-4000

	MAIL ADDRESS:	
		STREET 1:		1650 TECHNOLOGY DRIVE, SUITE 800
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95110
</SEC-HEADER>
<DOCUMENT>
<TYPE>3/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2005-01-31</periodOfReport>

    <dateOfOriginalSubmission>2005-02-03</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000709283</issuerCik>
        <issuerName>QUANTUM CORP /DE/</issuerName>
        <issuerTradingSymbol>DSS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001316395</rptOwnerCik>
            <rptOwnerName>Wold Jim</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1650 TECHNOLOGY DRIVE, SUITE 800</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN JOSE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95110</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Sr. VP GM Storage Devices</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>10500</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Non-Qualified Stock Option (Right to buy)</value>
                <footnoteId id="F3"/>
                <footnoteId id="F4"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>2.76</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2005-01-05</value>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <value>2012-01-05</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>52500</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">All direct ownerhsip shares result from grant of restrictred stock under Rule 16b(3) plan. The vesting of restricted stock shall be: 33% on 1/1/2006; 33% on 1/1/2007; and the remaining 34% on 1/1/2008. Purchase price of restricted stock is $0.01 per share.</footnote>
        <footnote id="F2">Restricted stock granted inadvertently omitted from Initial Statement filing.</footnote>
        <footnote id="F3">Right to buy granted under Rule 16b(3) plan.</footnote>
        <footnote id="F4">Non-Qualified Stock Option grant inadvertently omitted from Initial Statement filing.</footnote>
        <footnote id="F5">Options will vest over equal monthly installments for 48 months.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/Shawn Hall, by Shawn Hall Attorney in Fact for Jim Wold</signatureName>
        <signatureDate>2005-04-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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