Disclosed herein is an optical recording apparatus which may record post pre-format recording information on an optical recording medium which has a guide portion formed in advance for guiding a light beam and a plurality of address portions for specifying individual positions of the guide portion, which may include position information detection means for detecting position information of a recording region in which significant information is recorded along the guide portion and a breakdown region which is part of the guide portion or/and the address portions and is broken down so as not to be detected using the light beam, servo means for controlling the position of the light beam based on the position information, and laser light intensity adjustment means for adjusting the intensity of the light beam in order to record information based on a predetermined format in the recording region and thermally break down the breakdown region.