Embodiments in accordance with the present invention erase a desired area
on a recording surface of disk or disk drive apparatus. According to an
embodiment, a hard disk drive (HDD) performs erase on a recording surface
by moving a head element unit at one-half a servo track pitch with
reference to a servo address. Before actual erase is started on the
recording surface, the HDD generates a management table configured based
on servo addresses from a management table configured based on data
tracks. At an erase process, the HDD sets parameters in accordance with
the zone and skips a management area with reference to this management
table based on the servo addresses.