| 摘要 |
A spare area 12 is divided into partial spare areas 12 A to 12 D, and a defect list 15 is divided into partial defect lists 15 A to 15 D, with the partial spare areas 12 A to 12 D corresponding to the partial defect lists 15 A to 15 D, respectively. When a defect is detected, only the partial defect list updated by the detection is recorded into the defect management area of a recording medium 10.
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