| 摘要 |
A data protecting method wherein a resident control program which is stored as to be resident in a storage medium driving device judges on the basis of instruction from an executing device for executing a specified process, whether a control program for executing the process is incorporated or not therein, searches the control program from a set storage medium when the result of judgment is NO, reads in the searched control program, and incorporates the read-in control program therein. A storage medium driving device which stores this resident control program as to be resident, and a storage medium which is driven by this device.
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