CPC G11B 21/106 (2013.01) | 18 Claims |
1. A data storage device comprising:
a disk comprising a plurality of data tracks and a plurality of servo wedges, wherein the plurality of servo wedges comprise a plurality of wedge repeatable runout (WRRO) fields configured to store a plurality of WRRO compensation values in connection with the plurality of data tracks;
a read-write head configured to be actuated over the disk; and
a controller configured to:
gather position error signal (PES) data needed for computation of the WRRO compensation values during a field operation of the data storage device during a data recovery procedure (DRP) that is invoked when an error condition occurs, and
adjust a position of the read-write head based on the WRRO compensation values.
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