| 摘要 |
PROBLEM TO BE SOLVED: To improve convenience and operability of access in a double file system structure. SOLUTION: A logical drive corresponding to a first file system is used, and a logical drive entity corresponding to the first file system is generated in a logical drive, and a second file system entity following a second file system is mapped by using the region of the logical drive entity. A unique parameter block is secured in the region of the logical drive parameter corresponding to the first file system, and the leading position of the logical drive entity and the total size of all the logical drive entities are recorded as mapping information in the unique parameter block. The unique parameter block region is referenced by the software of a kernel mode or a user mode, so that it is possible to know the physical arrangement of the second file system entity following the second file system mapped to the first file system entity. COPYRIGHT: (C)2009,JPO&INPIT
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