Patent ID: 8391123

Claim:
An optical recording medium including a plurality of recording layers, the optical recording medium comprising: an information area including a lead-in zone, a data zone, and a lead-out zone, the lead-in zone or lead-out zone including a pre-write area for recording data prior to data being recorded in the data zone, the pre-write area being disposed at a predetermined position on each of the plurality of recording layers; and a temporary disc management area to record at least replacement management information, the temporary disc management area including a disc definition structure including a single one-byte pre-write area flag indicating for all of the plurality of recording layers of the optical recording medium whether or not the data for each respective layer has been recorded in the pre-write area, wherein the single one-byte pre-write area flag comprises only one bit for each respective recording layer so that a value of the only one bit indicates whether or not the data in the pre-write area has been recorded for the respective recording layer.