Patent ID: 7545720

Claim:
A write-once disc for use with a recording and/or reproducing apparatus, the write-once disc comprising: a user data area in which user data is recorded; a spare area other than the user data area and which comprises a substitute area for a defective area existing in the user data area; a temporary defect management area which comprises temporary defect information and temporary defect management information recorded for a recording operation for use by the recording and/or reproducing apparatus to perform disc defect management; and a defect management area other than the temporary defect management area which is reserved for the apparatus to record the temporary defect information and the temporary defect management information, wherein: the temporary defect management information comprises information on a recording position of the temporary defect information, the temporary defect information comprises a defect position pointer that points to a position of a defective area in the user data area and a replacement position pointer that points to a position of the replacement data that replaces a portion of the user data recorded in the defective area, and the defect management area is reserved for copies of last recorded temporary defect information and last recorded temporary defect management information for use by the recording and/or reproducing apparatus to perform disc defect management after finalization of the disc.