Magnetic disk device and error correction method
OwnerSyosuke MARUYAMA, Kana FURUHASHIinventors
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Abstract
According to one embodiment, a magnetic disk device includes a disk including a first area where user data is written and a second area which is different from the first area, a head configured to write data to the disk and read data from the disk, and a controller configured to generate, when a first sector of a first track, which includes a first parity sector and the first sector which is different from the first parity sector in the first area, is reassigned to a second track in the second area, a second parity sector corresponding to the first sector.
Claims20
A magnetic disk device comprising:
- a disk including a first area where user data is written and a second area which is different from the first area;
- a head configured to write data to the disk and read data from the disk;
- and
- a controller configured to generate, when a first sector of a first track, which includes a first parity sector and the first sector which is different from the first parity sector in the first area, is reassigned to a second track in the second area, a second parity sector corresponding to the first sector.
An error correction method which is applied to a magnetic disk device including a disk with a first area where user data is written and a second area which is different from the first area, and a head configured to write data to the disk and to read data from the disk, the method comprising:
- generating, when a first sector of a first track, which includes a first parity sector and the first sector which is different from the first parity sector in the first area, is reassigned to a second track in the second area, a second parity sector corresponding to the first sector.
Dependencies are inferred from the claim text.