Patent ID: 7532426

Claim:
A disk drive apparatus including: a head which reads servo data on a disk having a user data area for storing user data and which writes according to a write width and performs an erase process on a recording surface of said disk in a specified position; an actuator which supports said head and moves the head; an erase process control unit which sequentially specifies target positions for said head using servo addresses; and a read/write process unit control unit which controls said actuator to sequentially move said head to the target positions specified by said erase process control unit; wherein said erase process control unit refers to a table associating a data address with control information to identify a servo address associated with the data address and to associate said control information with the servo address and further refers to the servo address associated with said control information in specifying said target position to perform the erase process using said control information according to the target position.