| 摘要 |
PURPOSE:To arbitrarily select an activation OS by storing the activation OS selection information to select one of plural OSs into a non-destructive storing means and executing an initial program loading IPL from an OS storing means based on the activation OS selection information with a program control means at the time of activating a device. CONSTITUTION:An activation OS selector in a multi-operating system OS is composed of a processor 1, a memory 2 including a RAM and a ROM, a battery backup memory 3, a floppy disk device 4, an FD interface circuit 5, etc. The activation OS selection information selected at the time of activating is before hand stored in the battery backup memory 3, and at the time of activating the device, the initial program loading is executed from an OS storing means 3 based on the activation OS selection information. In such a way, at the time of activating the device, the activation OS to execute IPL can be arbitrarily selected by the activation OS selection information from a non-destructive storing means.
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