| 摘要 |
A method for preventing a BIOS from getting viruses, wherein a changeable memory for storing BIOS codes is divided into two areas, one is a primary actuating area and other is a duplicating area. Initially these two areas store identical BIOS. The method comprises the steps of actuating from the primary actuating area and determining whether the step of actuating exists; performing the process to a testing point, and comparing the check sums of the primary actuating area and the duplicating area; through the comparison, performing the starting up process from the primary actuating area and duplicating area and copying the data of the primary actuating area and duplicating area to one another to maintain one area having a complete BIOS in order to prevent the BIOS from being destroyed by virus, or by abnormal modification, so that the system operates normally.
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