Magnetic disk device and write processing method
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorTakayuki Kawabe
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Abstract
According to one embodiment, a magnetic disk device includes a disk, a head configured to write data to the disk and read data from the disk, and a controller configured to control the head to write a first track based on a first error rate read immediately after writing a second track adjacent in a radial direction of the disk to the first track.
Claims20
A magnetic disk device comprising:
- a disk;
- a head configured to write data to the disk and read data from the disk;
- and
- a controller configured to control the head to write a first track based on a first error rate read immediately after writing a second track adjacent in a radial direction of the disk to the first track, wherein
- the controller controls the head position to write the first track based on a first difference value between the first error rate and a maximum error rate at which the data written in the disk is readable.
(canceled)
The magnetic disk device according to claim 11, wherein the controller alters a first target position in the radial direction of when writing the first track based on the first difference value.
A magnetic disk device comprising:
- a disk;
- a head configured to write data to the disk and read data from the disk;
- and
- a controller configured, when writing a first track after writing a second track adjacent to the first track in a radial direction of the disk, to make a first upper limit value of offset to the second track side in the radial direction upon writing a first sector of the first track greater than a second upper limit value of offset to the second track side in the radial direction upon writing a second sector of the first track different from the first sector, based on a first error rate read immediately after writing the second track.
A write processing method to be applied to a magnetic disk device including a disk and a head configured to write data to the disk and read data from the disk, the method comprising:
- controlling the head to write a first track based on a first error rate read immediately after writing a second track adjacent in a radial direction of the disk of the first track, and
- controlling the head position to write the first track based on a first difference value between the first error rate and a maximum error rate at which the data written in the disk is readable.
(canceled)
Dependencies are inferred from the claim text.