Patent ID: 6493173
Filing Date: 2002-12-10
Classification: G11B

Abstract:
A disk drive comprising:(a) a disk comprising a track having repeatable runout (RRO), the track comprising: 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, wherein: the track is headerless in that the plurality of data sectors are uninterrupted by sector identification data; and one of the plurality of data sectors includes a RRO correction value to compensate for the RRO, the RRO correction value being stored at a user data rate different than the servo data rate; (b) a head; (c) a voice coil motor (VCM) for positioning the head over the track; and (d) a servo control system responsive to the servo information and the RRO correction value for generating a VCM control signal that is applied to the VCM for positioning the head over the track.