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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Lqc48TU78hqcobQRaD8L2pxAwe7e6Iap4gzGnmAeeyMmHuP3Xuw7vJDJpXV8bYNb
 Y4ae1bA6RCY0hpqbuyHjHA==

<SEC-DOCUMENT>0001209191-03-016765.txt : 20030812
<SEC-HEADER>0001209191-03-016765.hdr.sgml : 20030812
<ACCEPTANCE-DATETIME>20030812180536
ACCESSION NUMBER:		0001209191-03-016765
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030808
FILED AS OF DATE:		20030812

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PATEL KEYUR A
		CENTRAL INDEX KEY:			0001259331

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-16447
		FILM NUMBER:		03838649

	BUSINESS ADDRESS:	
		STREET 1:		MAXTOR CORP
		STREET 2:		2452 CLOVER BASIN DRIVE
		CITY:			LONGMONT
		STATE:			CO
		ZIP:			80503
		BUSINESS PHONE:		3037023840

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MAXTOR CORP
		CENTRAL INDEX KEY:			0000711039
		STANDARD INDUSTRIAL CLASSIFICATION:	COMPUTER STORAGE DEVICES [3572]
		IRS NUMBER:				770123732
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1226

	BUSINESS ADDRESS:	
		STREET 1:		500 MCCARTHY BLVD
		CITY:			MILPITAS
		STATE:			CA
		ZIP:			95035
		BUSINESS PHONE:		4088945000

	MAIL ADDRESS:	
		STREET 1:		500 MCCARTHY BLVD
		CITY:			MILPITAS
		STATE:			CA
		ZIP:			95035
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?><ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-08-08</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0000711039</issuerCik><issuerName>MAXTOR CORP</issuerName>        <issuerTradingSymbol>MXO</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001259331</rptOwnerCik><rptOwnerName>PATEL KEYUR A</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>2452 CLOVER BASIN DRIVE</rptOwnerStreet1><rptOwnerStreet2></rptOwnerStreet2><rptOwnerCity>LONGMONT</rptOwnerCity><rptOwnerState>CO</rptOwnerState><rptOwnerZipCode>80501</rptOwnerZipCode><rptOwnerStateDescription></rptOwnerStateDescription></reportingOwnerAddress><reportingOwnerRelationship><isDirector>0</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>Exec VP Strategic Planning</officerTitle></reportingOwnerRelationship></reportingOwner><derivat
iveTable><derivativeTransaction><securityTitle><value>Restricted Stock Units</value></securityTitle><conversionOrExercisePrice><footnoteId id="F1" /></conversionOrExercisePrice><transactionDate><value>2003-08-08</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>20000</value><footnoteId id="F1" /></transactionShares><transactionPricePerShare><value>0</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><footnoteId id="F1" /></exerciseDate><expirationDate><value>2006-08-08</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>20000</value></underlyingSecurityShares></underly
ingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>20000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeTransaction><derivativeTransaction><securityTitle><value>Employee Stock Option (right to buy)</value></securityTitle><conversionOrExercisePrice><value>9.18</value></conversionOrExercisePrice><transactionDate><value>2003-08-08</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>100000</value><footnoteId id="F2" /></transactionShares><transactionPricePerShare><value>0</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exercis
eDate><value>2004-08-08</value></exerciseDate><expirationDate><value>2013-08-08</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>100000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>0</value><footnoteId id="F3" /></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">Award of restricted stock units pursuant to Maxtor Corporation Restricted Stock Unit Plan, effective June 10, 2002 ("Plan").  Restricted stock units are issuable on a one-for-one basis and are payable in cash after vesting on third year anniversary or pursuant to accelerated vesting as set forth in the Plan.</footnote><footnote id="F2">Grant of options pursuant to Issuer's stock option plan, 
vesting over four years at the rate of 25% on the first anniversary of the grant date, as listed in the table, and at the rate of 6.25% quarterly thereafter.</footnote><footnote id="F3">Represents ownership of exercisable shares on August 7, 2003.</footnote></footnotes><remarks></remarks><ownerSignature><signatureName>Glenn H. Stevens by power-of-attorney.</signatureName><signatureDate>2003-08-12</signatureDate></ownerSignature></ownershipDocument>

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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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