| 摘要 |
An optical disk apparatus for recording data on and reproducing data from a recordable optical disk includes a storage unit and a control unit. The storage unit is configured to store specific useful information necessary for at least one of recording data on and reproducing data from the optical disk. The control unit is configured to record the useful information stored in the storage unit in a test write area of the optical disk, and reproduce and use the recorded useful information when the optical disk is placed in the optical disk apparatus.
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