INFORMATION RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To provide the information recording medium which has small delay of access due to a bad sector and a defect managing method. SOLUTION: The information recording medium includes a disk information area 4 and a data recording area 5. The data recording area 5 includes a user area 6 and a spare area 7. The spare area 7 is arranged more on the inner peripheral side of the information recording medium than the user area 6. The physical sector number of the sector given a logical sector number '0' (LSN:0) among sectors included in the user area 6 and spare area 7 is recorded in the disk information area 4.