Patent ID: 8000201

Claim:
An information recording system, comprising: an information recording and reproducing apparatus having a data recorder for recording data on an information recording medium having a preset data area on at least a first recording layer and a second recording layer; and a host; wherein the host is adapted to make a request for specifying a designated data area on the first recording layer within a range of the preset data area on the information recording medium, and a request for recording user data; wherein the information recording and reproducing apparatus is adapted to specify the designated data area on the first recording layer, after receiving from the host the request for specifying the designated data area; and wherein the information recording and reproducing apparatus, after receiving from the host a request for recording user data, is adapted to record the user data on the designated data area on the first recording layer of the information recording medium and record the user data on the preset data area on the second recording layer, and record predetermined data from an address following a last address of the designated data area on the first recording layer.