Patent ID: 11935566
Assignee: TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A magnetic disk device comprising:
a magnetic disk provided with a first track in which a plurality of first sectors in each of which a data segment is stored, and a second sector in which a parity for first error correction is stored are arranged in this order in a write and read direction from a first position;
a magnetic head that executes writing and reading on the first track in the write and read direction;
a buffer memory; and
a controller that
executes a first operation of sequentially reading, from each of the plurality of first sectors, a first data segment stored therein as the data segment, and storing a group of the read first data segments in the buffer memory,
obtains a first parity from the group of the read first data segments, and
executes a second operation of writing each first data segment in the group of the first data segments stored in the buffer memory, to a first sector that is a read source among the plurality of first sectors, and writing the first parity to the second sector, a start timing of the second operation being before a timing when the magnetic head reaches the first position.