An electronic apparatus executes a program by using a page table for managing, on a page unit basis, virtual and physical addresses of the program recorded in a first recording medium. The page table is set in such a manner that a physical address is unassigned to a designated area of the program stored in the first recording medium. When the area unassigned with the physical address is accessed during execution of the program, data of the program corresponding to the accessed physical address is copied from the first recording medium to a second recording medium.