Patent ID: 7123433
Filing Date: 2006-10-17
Classification: G11B

Abstract:
1. A method for self-servo writing in a disk drive, wherein the disk drive includes a transducer and a disk, the transducer reads data from and writes data to the disk, the disk includes tracks, the tracks include servo sectors, embedded runout correction (ERC) values compensate for repeatable runout (RRO) in the tracks, and a position error signal (PES) positions the transducer relative to the tracks, the method comprising: providing a reference pattern on the disk; then generating a PES using the transducer to read the reference pattern during a revolution of the disk; then self-writing a servo burst on the disk using the transducer during the revolution of the disk, wherein the PES indicates RRO for the servo burst; calculating an ERC value for the servo burst using the PES; and storing the ERC value on the disk.