The present invention provides an information recording medium manufacturing method and an information recording/reproducing method. The information recording medium records information in either a groove track or a land track, and the track in which the information is recorded has swing. The information recording medium comprises a data area for recording information, an internal side located in the data area, and a BCA area having management information related to the information recording medium. So in the information recording medium for recording information in the groove track and in the information recording medium for recording information in the land track, the swing direction of the track forms a reverse direction at the beginning, so as to set to either the groove track or the land track will the tracking servo code applied in the BCA area by recording bar-code labels.