An information processing apparatus includes a processor that executes an operating system, a nonvolatile main memory device to which the processor is directly accessible and that has a controller, and an external storage device to which the processor is not directly accessible. When the processor detects an error of the operating system, the processor resets devices other than the nonvolatile main memory device and restarts the operating system, and the controller writes data of the nonvolatile main memory device to the external storage device.