An information recording device is provided with a recording means (300) for recording first contents information on an information recording medium (100), an information acquiring means (467) for acquiring information of a kind or type of the information recording medium and a medium state indicative of a vacant capacity, a first control means (476) for controlling the recording means so as to record the first contents information in (i) a first manner when the medium state is in a first state, and a second control means (476) for controlling the recording means so as to record the second contents information in (ii) a second manner when the medium state is in a second state.