Disk drive for storing sector-reconstruction sectors and for storing a sector-reconstruction status in sectors distributed around a disk
AssigneeWestern Digital Technologies, Inc.
InventorMichael S. Rothberg
Life of this patent
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Abstract
A disk drive is disclosed comprising a disk, a head, and an actuator for actuating the head radially over the disk. The disk comprises a plurality of tracks, wherein each track comprises a plurality of sectors. The plurality of sectors comprise a plurality of data sectors for storing data and at least one sector-reconstruction (SR) sector for storing redundancy data generated in response to the data stored in at least one of the data sectors. At least two of the plurality of sectors of a track are for storing a SR status indicating a validity of the SR sector stored on the track.
Claims39
A disk drive comprising:
- a disk;
- a head;
- and
- an actuator for actuating the head radially over the disk, wherein:
- (a) the disk comprises a plurality of tracks;
- (b) each track comprises a plurality of sectors;
- (c) the plurality of sectors comprise a plurality of data sectors for storing data and at least one sector-reconstruction (SR) sector for storing redundancy data generated in response to the data stored in at least one of the data sectors;
- and
- (d) at least two of the plurality of sectors of a track for storing a SR status indicating a validity of the SR sector stored on the track.
A disk drive comprising:
- (a) a disk comprising a plurality of tracks, each track comprising a plurality of sectors, the plurality of sectors comprise a plurality of data sectors for storing data and at least one sector-reconstruction (SR) sector for storing redundancy data generated in response to the data stored in at least one of the data sectors;
- (b) a head;
- (c) an actuator for actuating the head radially over the disk;
- and
- (d) a disk controller for:
- writing data to the data sectors;
- writing the redundancy data to the SR sector;
- and
- writing an SR status to at least two of the plurality of sectors, the SR status indicating a validity of the SR sector.
A disk controller for use in a disk drive comprising a disk comprising a plurality of tracks, each track for storing a plurality of sectors, the plurality of sectors comprise a plurality of data sectors for storing data and at least one sector-reconstruction (SR) sector for storing redundancy data generated in response to the data stored in at least one of the data sectors, a head, an actuator for actuating the head radially over the disk, and the disk controller comprising:
- (a) a means for writing data to the data sectors;
- (b) a means for writing the redundancy data to the SR sector;
- and
- (c) a means for writing an SR status to at least two of the plurality of sectors, the SR status indicating a validity of the SR sector.
Dependencies are inferred from the claim text.