CROSS-REFERENCE TO RELATED APPLICATIONS

This application is based upon and claims the benefit of priority from Japanese Patent Application No. 2021-092909, filed Jun. 2, 2021, the entire contents of which are incorporated herein by reference.

FIELD

Embodiments described herein relate generally to a magnetic disk device and a read/write processing method.

BACKGROUND

In recent years, a magnetic disk device having a technology for achieving high recording density has been developed. As a magnetic disk device that achieves high recording density, there is a magnetic disk device capable of performing a shingled recording type (shingled write magnetic recording (SMR), or shingled write recording (SWR)) in which a plurality of tracks are overwritten in a radial direction of a disk.

The magnetic disk device has a track including a parity sector obtained by performing an exclusive OR (XOR) operation on each sector of a particular track. When an error is detected in a particular sector of the track, the magnetic disk device performs error correction processing (hereinafter, may be referred to as track ECC processing) of correcting the error by an error correction code based on a parity sector corresponding to the track. In the shingled recording type magnetic disk device, it is possible to improve the track density by mounting the track ECC.

