Patent ID: 7085084

Claim:
A servo pattern recording method for a magnetic disk apparatus, having a magnetic disk for recording information thereon; a head having a write element for use of recording information onto said magnetic disk and a read element for reproducing information from said magnetic disk; and an actuator for moving said head to a desired radial position on said magnetic disk, comprising the following steps of: recording a servo pattern for positioning of said head on a recording surface of said magnetic disk; recording marker patterns for detecting passage time of said head, disposing in a front and a rear of a burst pattern for detecting a radial position of said head, respectively, on a track in a circumferential direction, on said servo pattern recorded on the recording surface of said magnetic disk; and conducting a self servo write operation by said magnetic disk apparatus using said servo pattern; wherein a distance is measured, in the circumferential direction, between two neighboring servo patterns which are recorded on the recording surface of said magnetic disk, and wherein a time period recording a new servo pattern is adjusted based on the measured distance, when conducting said self servo write operation.