发明授权
US07576941B1 Disk drive writing wedge RRO values in a butterfly pattern 失效
磁盘驱动器写入楔形RRO值为蝴蝶图案

Disk drive writing wedge RRO values in a butterfly pattern
摘要:
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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