Patent ID: 7554886

Claim:
A disk access device that accesses a disk on which data recording is performed according to a format including a plurality of zones each including a user area where recording is performed, a guard track zone where recording is not performed being provided between each of the user areas, the disk access device comprising: a head operable to read and write data from/to the disk; an acquisition unit operable to acquire (i) deferment time information indicating a deferment time period that begins upon completion of data reading or writing in the user area of a currently accessed one of the zones and ends when the head enters a predetermined area of the guard track zone following the user area of the currently accessed zone, and (ii) setting time information indicating a setting time period for performing settings for data reading or writing in one of the plurality of zones to be accessed next; and a control unit operable to, if the deferment time period is shorter than the setting time period, move the head back, when data reading or writing in the currently accessed zone ends, to a position such that the setting time period ends before the head advancing from the position arrives at the predetermined area.