Patent ID: 7773473

Claim:
A recording and/or reproducing apparatus, comprising: a recording and/or reproducing unit which records data on or reads data from a write once disc; and a controller which controls the recording and/or reproducing unit to record a temporary defect list, a temporary disc defect structure (TDDS), and a space bit map in a temporary defect management area (TDMA) formed in a lead-in area of the disc, wherein: the temporary defect list comprises location information of a defective block occurring in a user data area of a data area of the disc, the temporary disc defect structure comprises: location information of the temporary defect list; and an area allocation information for indicating whether a spare area is allocated in the data area, the space bit map comprises information for distinguishing, in the user data area, a block in which data is recorded from a block in which data is not recorded, and the area allocation information comprises size information of the spare area.