| 摘要 |
A method and apparatus for minimizing performance degradation resulting from reassignment of data to alternate sectors as a result of a defect within the original sector. For example, when a request for writing data "a" into a sector A is made but the data is written into an alternative sector A' in an alternative sector area X because the sector A is defective. Therefore, when a write request for writing data "b" into a sector B is made subsequently, re-assignment is performed to a sector B' subsequent to the alternative sector A'. Similarly, a defective sector C for which a request for writing data "c" is made is re-assigned an alternative sector C'. Thus, the successive data a, b, and c are written into the successive sectors A', B', and C' in the same alternative sector area X, minimizing performance degradation.
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