Patent ID: 6920011

Claim:
A servo information processing method in a recording device including a disk-shaped recording medium having tracks arranged concentrically and servo gates each having servo information and being disposed in a radial direction perpendicular to the tracks, a head which writes and reads data, a head drive unit performing head position control according to the servo information, a recording control unit performing data transmission and reception to and from the head and performing write and read control to and from the disk-shaped recording medium, and a processor controlling both the recording control unit and the head drive unit, said servo information processing method comprising the steps of: in the head drive unit, checking whether the head is located on an object track based on the servo information read out by the head; in the head drive unit, reporting error information to the processor when the head is not located on the object track; and on completion of data writing, if the head is not located on a servo gate, moving the head to a next servo gate on the same track as the track on which the head is located when the data writing is completed, and checking at the next servo gate whether the head is located on the object track.