Disk drive write verifying unformatted data sectors
AssigneeWestern Digital Technologies, Inc.
InventorsChun Sei Tsai, William B. Boyle, Carl E. Barlow, Kenneth J. Smith
Life of this patent
Estimating the term…
Abstract
A disk drive is disclosed comprising a disk having a plurality of data sectors, wherein a physical block address (PBA) is associated with each data sector. When a write command is received from a host to write user data to the disk, and the write command comprises an unformatted logical block address (LBA), the user data is written to a first data sector, and the first data sector is write verified. A second data sector is defect scanned, and after the second data sector passes the defect scan, the user data is migrated from the first data sector to the second data sector and the LBA is formatted to the second data sector.
Claims14
A disk drive comprising:
- a disk comprising a plurality of data sectors, wherein a physical block address (PBA) is associated with each data sector;
- a head actuated radially over the disk;
- and
- control circuitry operable to:
- receive a write command from a host to write user data to the disk, the write command comprising an unformatted logical block address (LBA);
- write the user data to a first data sector;
- write verify the first data sector;
- defect scan a second data sector;
- after the second data sector passes the defect scan, migrate the user data from the first data sector to the second data sector;
- and
- format the LBA to the second data sector.
A method of operating a disk drive, the disk drive comprising a disk comprising a plurality of data sectors, wherein a physical block address (PBA) is associated with each data sector, and a head actuated radially over the disk, the method comprising:
- receiving a write command from a host to write user data to the disk, the write command comprising an unformatted logical block address (LBA);
- writing the user data to a first data sector;
- write verifying the first data sector;
- defect scanning a second data sector;
- after the second data sector passes the defect scan, migrating the user data from the first data sector to the second data sector;
- and
- formatting the LBA to the second data sector.
Dependencies are inferred from the claim text.