In-situ determination of landing zone transition for improved disk drive reliability
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United States of America Patent
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Apr 13, 2004
Grant Date -
N/A
app pub date -
Jul 13, 2000
filing date -
Jul 13, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A data storage disk is formatted using a measured edge location of a textured landing zone as a reference for writing servo information to the surface of the disk. The edge of the textured landing zone is determined by moving a transducer across the surface of the disk in a radial direction while monitoring a signal generated by the transducer. When a predetermined indication is detected within the signal, the corresponding location of the transducer is recorded. This transducer location is then used to calculate a desired location of at least one data track of the data storage disk. Preferably, this procedure is performed within a servo track writer. In one embodiment, a worst-case edge location is determined for all of the disk surfaces within a disk stack. This worst-case edge location is then used as a reference for writing servo information on all disk surfaces within the stack.
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