An information processing apparatus includes an interface switching circuit including a first hardware interface to which a first device part is coupled; and a first processor including a second hardware interface, wherein the interface switching circuit is configured to block, when hot-removal of the first device part is detected, a signal path between the first hardware interface and the second hardware interface, and cancel, when diagnosis for a second device part newly hot-inserted in the first hardware interface is completed, the blocking of the signal path in response to a result of the diagnosis, and the first processor is configured to detect presence of the second device part from that the first processor transits from a non-responsive state to a responsible state, and execute an initialization process for the second device part.