Invention Grant
- Patent Title: Magnetic disk drive and rewrite processing method
- Patent Title (中): 磁盘驱动器和重写处理方法
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Application No.: US14739462Application Date: 2015-06-15
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Publication No.: US09361944B1Publication Date: 2016-06-07
- Inventor: Shoichi Aoki
- Applicant: Kabushiki Kaisha Toshiba
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: White & Case LLP
- Priority: JP2015-034910 20150225
- Main IPC: G11B27/36
- IPC: G11B27/36 ; G11B5/012 ; G11B19/04 ; G11B20/18 ; G11B5/02 ; G11B5/09

Abstract:
According to one embodiment, a magnetic disk drive including a disk including a plurality of track groups each including a first write track and a second write track partially overlapping the first write track, and a processor configured to count a write count corresponding to write processing of adjacent track groups for each of the plurality of track groups, and calculate an estimated time at which the write count reaches a particular value and, if a track group in which the estimated time is approximate is detected, read data of the approximate track group, and execute rewrite processing of writing the data to the track group in which the estimated time is approximate, at a time earlier than the estimated time.
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