Headerless disk drive comprising repeatable runout (RRO) correction values recorded at a user data rate

摘要

A disk drive is disclosed comprising a track recorded on a disk, wherein the track has repeatable runout (RRO). The track comprises a plurality of embedded servo sectors including servo information stored at a servo data rate, and a plurality of data sectors between the embedded servo sectors. The track is headerless in that the plurality of data sectors are uninterrupted by sector identification data. One of the plurality of data sectors includes a RRO correction value used to compensate for the RRO, the RRO correction value being stored at a user data rate different than the servo data rate. The disk drive further comprises a head and a voice coil motor (VCM) for positioning the head over the track. A servo control system, responsive to the servo information and the RRO correction value, generates a VCM control signal that is applied to the VCM for positioning the head over the track.