| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a convenient installation method or file update method for immediately restoring an original program or file data even when any error is generated during the upgrade of software or the update of a file to reduce any operation burden on a user. <P>SOLUTION: A first program or file stored in a first storage region is copied to a second storage region, and information indicating the position of the first program or file stored in a position information storage region is rewritten with information indicating the position of the copied program or file, and then a second program or file is written, and then the position information storage region is rewritten with information indicating the position of a second program or file. <P>COPYRIGHT: (C)2004,JPO |
