Disk driving system and disk driving method

In a disk recording/reproduction apparatus, the operational limit of each of a mechanical apparatus and signal processing of a disk drive is taken into consideration. When an area from the innermost region of a disk to a predetermined distance is recorded or reproduced, the disk is rotationally driven by a CAV method, and when an area from the predetermined distance of the disk to the outermost region is recorded or reproduced, the disk is rotationally driven by a CLV method.