US 12,230,302 B2
Magnetic disk device and method
Yusuke Tomoda, Kawasaki Kanagawa (JP)
Assigned to Kabusbiki Kaisha Toshiba, Tokyo (JP); and Toshiba Electronic Devices & Storage Corporation, Tokyo (JP)
Filed by Kabushiki Kaisha Toshiba, Tokyo (JP); and Toshiba Electronic Devices & Storage Corporation, Tokyo (JP)
Filed on Mar. 8, 2023, as Appl. No. 18/180,463.
Claims priority of application No. 2022-149153 (JP), filed on Sep. 20, 2022.
Prior Publication US 2024/0096358 A1, Mar. 21, 2024
Int. Cl. G11B 20/18 (2006.01); G11B 5/55 (2006.01)
CPC G11B 5/556 (2013.01) 10 Claims
OG exemplary drawing
 
1. A magnetic disk device comprising:
a magnetic disk having a plurality of first storage regions disposed in a radial direction, each of the first storage regions including tracks, a recording method of each of the first storage regions being changeable between a first method and a second method, the first method being a method in which data of two tracks adjacent to each other in the radial direction of the magnetic disk are written so as to overlap each other, the second method being a method in which data of two tracks adjacent to each other in the radial direction of the magnetic disk are written so as not to overlap each other;
a magnetic head; and
a control circuit that performs operations, when having received a first command instructing to change the recording method of one of the plurality of first storage regions, which is a second storage region, between the first method and the second method, the operations including changing the recording method of the second storage region in accordance with the first command, and moving the magnetic head onto the second storage region of which recording method has been changed in accordance with the first command, before receiving a second command, the second command being a command that is received first after the first command, wherein
the magnetic disk device is connectable to a host, and
the first command and the second command are commands received from the host.