Magnetic disk device and method of controlling magnetic disk device
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorsTakayuki Kawabe, Takeyori Hara
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Abstract
According to one embodiment, a magnetic disk device includes a magnetic disk, a magnetic head, and a controller including an offtrack write table, positioning the magnetic head, and registering an address at which data in a track is written and a positioning error of the magnetic head at the address for the track, in the offtrack write table. When writing data to a first sector, the controller corrects a positioning target position of the first sector, based on a positioning error of a second sector located on two tracks away in a radial direction from the first sector.
Claims9
A magnetic disk device comprising:
- a magnetic disk;
- a magnetic head positioned in a track provided at a predetermined track pitch of the magnetic disk, writing data to the track, and reading data from the track;
- and
- a controller including an offtrack write table, positioning the magnetic head, and registering an address at which data in the track is written and a positioning error of the magnetic head at the address for the track, in the offtrack write table,
- wherein
- when writing data to a first sector, the controller corrects a positioning target position of the first sector, based on a positioning error of a second sector located in two tracks away in a radial direction from the first sector.
A method of controlling a magnetic disk device comprising a magnetic disk, a magnetic head positioned in a track provided at a predetermined track pitch of the magnetic disk to write data to the track and read data from the track, and an offtrack write table, the method comprising:
- positioning the magnetic head;
- registering an address at which data in the track is written and a positioning error of the magnetic head at the address for the track, in the offtrack write table;
- and
- when writing data to a first sector, correcting a positioning target position of the first sector, based on a positioning error of a second sector located in two tracks away in a radial direction from the first sector.
Dependencies are inferred from the claim text.