| 摘要 |
PROBLEM TO BE SOLVED: To enhance reliability by surely performing boot-up when power is turned on even if there is an error during firmware update. SOLUTION: Firmware FW1 and FW2 are separately stored in a non-volatile memory 32, in which a boot code 74 for start-up and a restoration code 76 are stored, and a first magnetic disk 20-1. A copy of the firmware FW1 stored in the non-volatile memory 32 is stored in the first magnetic disk 20-1, and a copy of the entire firmware FW1 and FW2 stored in the first disk medium is stored in a second magnetic disk 20-2. When an error occurs during the firmware update, upon next power-on, whether the volatile memory 30, the first magnetic disk 20-1, and the second magnetic disk 20-2 are normal or abnormal is judged, and va35d firmware is read and allocated to the volatile memory 30 to perform start-up by a start-up mode corresponding to the judgement contents. COPYRIGHT: (C)2008,JPO&INPIT
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