Method and apparatus for recording defective track identificatio

Details Method and apparatus for recording defective track identificatio Method and apparatus for recording defective track identificatio

1995-11-16

1998-07-21

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data in specific format

360 50, 360 55, 360 60, G11B 509

Patent

active

057842167

ABSTRACT:
An apparatus and a method for operating a disk drive are described where defect information is written in a field other than an identification (ID) or header field in a data sector. Rather, defect information is written to a field, preferably an unused field like a sector gap or write-to-read gap. By placing defect information in the sector gap, or the like, disk capacity for user data is improved. Also, as in headerless and merged identification data formats, defect information does not need to be stored in an off-disk memory such as a random access memory (RAM).

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