Disk drive and method for reducing spin-up processing time

摘要

In a spin-up process in a disk drive, the counted values of a PMA counter and a TOC counter are compared with each other with respect to a write-once disk. The PM counter is a counter adapted to count the number of disks, in which information is written in a PMA region, among the disks from which information is theretofore read in the disk drive. The TOC counter is a counter adapted to count the number of disks in which information is not written in the PMA region.