| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem in a conventional file system which is used by inexperienced user and an unspecified number of users wherein it is difficult to detect a written file and an updated file and restore them to an original condition. SOLUTION: When executing a plurality of OSs simultaneously in one computer, specific directory and file in a file system are stored in a file system of back end OS by utilizing a communication function between OSs. After restarting the system, specific directory and file are written back on a front end OS side to store updating of specific file and directory. Furthermore, a part or all of the updated file system are reflected on original held by a back end OS side. |
