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Error logging method utilizing temporary defect list

  • US 6,381,710 B1
  • Filed: 10/12/1995
  • Issued: 04/30/2002
  • Est. Priority Date: 04/07/1995
  • Status: Expired due to Term
First Claim
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1. An error logging method, comprising the steps of:

  • detecting a first error while reading data from a magnetic disk;

    determining whether said first error has been previously recorded on a defect list, said defect list for storing errors that are classified as defects of said magnetic disk;

    when said first error has not been previously recorded on said defect list, determining whether said first error has been previously recorded on a first error list, said first error list for storing positions of errors on said magnetic disk and occurrence frequencies of the errors;

    when said first error has not been previously recorded on said first error list, recording said first error on said first error list;

    when said first error has been previously recorded on said first error list, increasing a value indicative of an occurrence frequency of said first error; and

    when said value indicative of said occurrence frequency of said first error is greater than or equal to a threshold value, recording said first error on said defect list.

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