Western Digital Technologies, Inc.

Tuong M Vu

Guoxiao Guo

Jie Yu

Jonathan V Nguyen

John Yin Kwong Li

Eugene Chun-Tsing Wu

Teddy T C Chen

A disk drive is disclosed comprising a plurality of servo sectors that define a plurality of tracks, and a head comprising a read element radially offset from a write element. The read element is positioned over a first track, and the first track is read to generate first read wedge repeatable runout (WRRO) values. A first seek operation of the head positions the read element over a second track, and the second track is read to generate first write WRRO values. The first write WRRO values are used to write the first read WRRO values to the first track. A second seek operation of the head positions the read element over a third track, and the third track is read to generate second write WRRO values. The second write WRRO values are used to write the first write WRRO values to the second track.

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Lake Forest, CA, United States of America

Tuong M Vu