Write-once type optical disc, and method and apparatus for managing defective areas on write-once type optical disc

The write-once recording medium and a method for managing a defective area on the recording medium and an apparatus is provided. The method at the time of writing data to a data area, and when detecting a defect area existing in the data area, and the defective area is detected, writing data written in the defective area to another area in the data area, and the defective It comprises the recording of the defect management information related to the area in the defect management area on the at least one recording medium. Blu-ray Disc, a write-once, BD-WO, the defective area, management, and defect management areas, the defect list, DDS