An object of the present invention is to display, during data recording, the number of recording media that are required to store all of recorded data in the case where the recorded data is copied to the recording media, and to display a ratio of a recorded area to the capacity of the recording medium to which data is copied, and thereby to provide improved convenience. The capacity of a large-capacity recording medium such as a hard disk is divided into data fragments each of which is equivalent to the capacity of a small-capacity recording media such as an optical disc, so that data is recorded on a partition capacity basis. In addition, the number of used media each having the same amount as the partition capacity is displayed; and the amount of recorded data, or the remaining recordable capacity, based on the partition capacity, is also displayed.