Data processing apparatus and file management method therefor

摘要

In the data processing apparatus and file management method therefor of the present invention, when each piece of data in one of plural blocks is recorded as a data portion on a disk medium (11), continuous ID numbers are assigned to the individual continuous blocks, each of the assigned ID numbers is stored in the ID portion of sub-code portion, address information indicating the recording position of the head of at least the next block is stored in the link portion of the sub-code portion, and the sub-code portion is recorded together with the data portion of the block on the disk medium (11).