Patent ID: 8509043

Claim:
A write-once disc, comprising: a lead-in area in which a first temporary defect management area (TDMA) is arranged, and a data area in which a second temporary defect management area (TDMA) and a third temporary defect management area (TDMA) are arranged, wherein a temporary defect management structure comprising a temporary disc definition structure and a temporary defect list is recorded in the at least one of the first TDMA, the second TDMA, and the third TDMA, the temporary disc definition structure comprises information which is used to determine whether the second TDMA and the third TDMA are allocated in the data area, and information on the recording position of the temporary defect list, the temporary defect list comprises information on a location of a defective block and information on a location of a replacement block corresponding to the defective block, a first data block and a second data block, respectively corresponding to the second TDMA and the third TDMA are arranged in the lead-in area, and which TDMA among the first TDMA, the second TDMA and the third TDMA comprises a last temporary defect management structure is determined according to whether access information is recorded in the first data block and the second data block.