| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve reliability of file management data included in user data provided from a host system side, in a flash memory system storing system data in a flash memory. Ž<P>SOLUTION: The flash memory system stores the system data in a physical block (system block) reserved in advance. When a memory controller in the flash memory system cannot detect an empty block allocated to any logical block, whether the logical block corresponds to a predetermined logical block is determined. Only when determining that the logical block corresponds to the predetermined logical block, the memory controller allocates a system block storing no valid system data, to the logical block. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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