An information processing apparatus, an execution control method, an execution control program, and an execution control medium storing the execution control program are described. The information processing apparatus has a processor, which concurrently performs: (1) initializing hardware resources needed for execution of the information processing apparatus; and (2) expanding an operating system and a file system image stored in a nonvolatile memory in a compressed format and transferring the expanded operating system and file system image to a volatile memory using a direct memory access controller.