INFORMATION PROCESSOR, DATA BACKUP METHOD AND STORAGE MEDIUM IN WHICH DATA BACKUP PROGRAM IS STORED

摘要

PROBLEM TO BE SOLVED: To enable data backup by using an easily attachable/detachable storage device without fixedly mounting a storage device for data backup. SOLUTION: An attachable/detachable input device 16 is used for the backup of data write to a hard disk device 24, the contents of the data write to the hard disk device 24 are also written in a hard disk device 16 when the hard disk device 16 is connected, the contents of the data write to the hard disk device 24 are stored in a change log 22d when the hard disk device 16 is not connected, the hard disk device 24 is synchronized with the hard disk device 16 by performing the backup of the stored contents of the data write when the hard disk device 16 is connected and after that, normal backup by using the hard disk device 16 is restarted.