Write-once recording medium and defective area management method and apparatus for write-once recording medium

Defect management method will be explained in at least the optical recording medium of a write once type having one or more recording layers. The method is defective in at least one of, but is assigned the at least one replacement area and a plurality of temporary defect management areas to the optical recording medium, the temporary defect management areas; and the plurality of temporary defect management areas is allocated separately that which comprises the step of recording the management information is characterized. Recording medium, a Blu-ray Disc, a write-once, BD-WO, the defective area, management, TDMA, DMA,