A structure is provided that prevents damage to an HDD and loss of recorded data by prohibiting the hard disk from being shifted to the active state in a state in which there is a problem with an environment. On the basis of detection information of each of sensors such as a fall sensor and a temperature sensor, it is determined whether or not data recording or a playback process utilizing the hard disk can be executed safely. The hard disk is caused to be shifted from being in a suspended state to being in an active state on condition that it is determined that safe data recording or playback is possible, and a data recording and playback process utilizing the hard disk is executed. By using this structure, the hard disk is prevented from being shifted to being in the active state in a state in which there is a problem with the environment, for example, in the case of falling, the case of high temperature or high humidity, or the like, and damage to the HDD and loss of recorded data can be prevented.