| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to easily perform restoration at the time of a file faulty. SOLUTION: Contents at the time of a file saving are directly referred to/ updated without restoring a file, which makes restoration at the time of file fault extremely easy, because file management information related to a file which allocation is demanded of and the file contents are retrieved from a save medium 1, a device having the file management information concerned and its position, a device having the file contents concerned, a starting position and its size are registered in a file information correspondence table 5 respectively, and this file information correspondence table 5 is referred to in accordance with an input/output demand, and the position concerned where a specified files is present is directly accessed to. |
