/rewritten by the user; and [0065] lead-out area 1005 made up of a rewritable data zone capable of information rewriting. [0066] The embossed data zone of lead-in area 1002 records in advance: [0067] information such as the disc type indicating a DVD-ROM, DVD-RAM, DVD-R, or the like, disc size, recording density, physical sector numbers indicating the recording start/end positions, and the like, w