MAGNETIC DISK DEVICE AND READING METHOD
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United States of America Patent
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app pub date -
Feb 24, 2016
filing date -
Nov 20, 2015
priority date (Note) -
Abandoned
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Abstract
According to one embodiment, when an access destination of a reading request is a second region, a controller performs a first retry reading process by use of a second reading condition in first parameter information. The second region is adjacent to a first region, which is adjacent to a defect region and has a particular width, and is present as a region other than the defect region on a magnetic disk. When the access destination of the reading request is the first region, the controller performs a second retry reading process by use of a fourth reading condition in second parameter information. The second parameter information is set such that a grown defect is registered at an earlier time in the second retry reading process, as compared with that in the first retry reading process.
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