Patent ID: 7057844
Filing Date: 2006-06-06
Classification: G11B

Abstract:
1. A disk drive comprising: an actuator configured to have a head that includes a write head for writing data on a disk medium and a read head for reading out the data from the disk medium and to position the head relative to a target position on the disk medium; a calculating unit configured to obtain a first position offset amount between the write head and the read head relative to the target position on the disk medium and to calculate a second position offset amount by using the first position offset amount and an offset correction amount in accordance with a disk runout of the disk medium, the offset correction amount being calculating by correcting the first position offset amount in accordance with the disk runout; and a control unit configured to perform positioning control including a position correction operation corresponding to the second position offset amount and positioning the read head or write head to the target position on the disk medium.