Method and apparatus for initial self-servo writing

摘要

Embodiments of the present disclosure provide a method of self-servo writing, the method comprising actions of positionally tracking a selected timing track of a data storage disk, wherein the selected timing track has one or more timing segments; synchronizing an angular position signal to rotation of the data storage disk based on at least one of the one or more timing segments of the selected timing track; specifying servo sector positions relative to the synchronized angular position signal; writing servo sectors to the data storage disk at the specified servo sector positions relative to the synchronized angular position signal; detecting one or more positional errors in timing segments of a next timing track of the data storage disk based at least in part on the synchronized angular position signal; and accounting for the detected one or more positional errors in writing subsequent servo tracks. Other embodiments are also described.

主权项

1. A method performable by read/write head of a disk drive to write a plurality of servo tracks onto a disk, wherein each servo track comprises one or more servo sectors, the method comprising:
rotating the disk at a constant angular velocity; (i) based on an angular position of the read/write head to the disk and (ii) while the disk is rotating at the constant angular velocity, writing, via the read/write head, a sequence of timing tracks onto the disk; positionally tracking a selected timing track of the sequence of timing tracks, wherein the selected timing track has one or more timing segments; synchronizing an angular position signal to the rotation of the disk based on at least one of the one or more timing segments of the selected timing track; specifying servo sector positions relative to the synchronized angular position signal; writing servo sectors to the disk at the specified servo sector positions relative to the synchronized angular position signal; detecting one or more positional errors in timing segments of a next timing track of the disk based at least in part on the synchronized angular position signal; and accounting for the detected one or more positional errors in writing subsequent servo sectors.