Patent ID: 6233699
Filing Date: 2001-05-15
Classification: G11B

Abstract:
An information recording medium, comprising:a disk information area;a user area including a plurality of sectors; anda spare area including at least one sector which is usable when at least one of the plurality of sectors included in the user area is a defective sector,wherein:the spare area is located radially inward from the user area,a physical sector number of a sector to which a logical sector number ""0"" is assigned, among the plurality of sectors included in the user area and the spare area, is recorded in the disk information area,logical sector numbers are respectively assigned to the sectors other than the defective sector included in the user area in a decreasing order from the sector to which a last logical sector number is assigned, anddata to be recorded in a file management area is recorded in at least one sector from the sector to which the logical sector number ""0"" is assigned.