Patent ID: 6560055
Filing Date: 2003-05-06
Classification: G11B

Abstract:
In a data storage system comprising multiple media surfaces, each surface having a plurality of concentric tracks divided into a plurality of sectors each having a sequential physical sector number representing the number of the sector on a respective one of the plurality of concentric tracks, a plurality of cylinders each being formed from a given location of tracks on different media surfaces, physical sector number information provided by the storage system and not stored within any of the plurality of sectors, each sector comprising:an identifier portion including a head number and a defective sector list of sector numbers for all sectors on a respective one of the plurality of concentric tracks which are to be skipped; and a data portion for storing data, the data storage system further comprising: means for receiving a physical sector number from the data storage system and for reading the defect list from a sector of a track and for outputting a logical sector number corresponding to the physical sector number.