The purpose of the present invention is to reduce the likelihood that data recording is prohibited due to the lack of test area. For each of a plurality of recording layers of an optical recording medium, a test area to which a trial write-in is performed to control the laser power is set, and information representing actual location of the set test area is recorded. The information representing the actual location of the test area is acquired by reproducing the information recorded in the optical recording medium including a plurality of recording layers with each recording layer set with a test area to which a trial write-in is performed to control laser power, and recording the information representing the actual location of the set test area.