Drive device

A drive apparatus for reproducing data recorded in a write-once recording medium, wherein

• the write-once recording medium includes a spare area and a user data area,
• each of the spare area and the user data area includes a plurality of ECC clusters,
• each of the plurality of ECC clusters includes a plurality of physical sectors,
• location information before replacement is recorded in each of the plurality of ECC clusters,
• information indicating that a replacement recording is not performed is set in the location information before replacement when a data recording which is performed in accordance with a recording instruction is an appending recording,
• information indicating the location specified by the recording instruction is set in the location information before replacement when the data recording which is performed in accordance with the recording instruction is a first time pseudo-overwrite recording;
• and
• information indicating a replacement location for the location specified by the recording instruction is set in the location information before replacement when the data recording which is performed in accordance with the recording instruction is a second time or more pseudo-overwrite recording,
• the drive apparatus comprising:
• a recording/reproduction section for performing a recording operation or a reproduction operation for the write-once recording medium;
• and
• a drive control section for controlling the recording/reproduction section,
• wherein
• the drive control section at least performs a process including:
• receiving a reproduction instruction;
• determining whether or not the reproduction of a latest replacement management information list has failed in response to the reproduction instruction;
• controlling the recording/reproduction section to reproduce location information before replacement recorded in the spare area and the user data area when the reproduction of the latest replacement management information list is determined to have failed;
• generating the latest replacement management information list based on the reproduced location information before replacement;
• and
• controlling the recording/reproduction section to record the latest replacement management information list at a predetermined location.