Patent attributes
A head position control method controls a position of a head of a first apparatus with respect to a disk which has been formed with a track and has been recorded with servo information including position information in servo frames by a second apparatus that is different from the first apparatus. The method includes measuring an eccentricity of the disk in the first apparatus and calculating a correction value for controlling the head to scan a virtual circular locus approximately matching the track, writing the correction value in a specific servo frame, and controlling the head during a seek, based on the correction value read from the specific servo frame, so that the head scans the virtual circular locus approximately matching the track which has been formed by the second apparatus.
