Information record medium having first and second recording layers in which mid areas are recorded respectively, and apparatus for recording the same

摘要

An information record medium is provided with a first recording layer on which a data group is recorded, and a second recording layer on which a data group is recorded. On the first recording layer, a lead-in area, management information for the whole of recording information, and the data group are recorded. On the second recording layer, a lead-out area and a data group are recorded. The lead-in area is recorded at the inner radius side of the information record medium. The lead-out area is recorded at the inner radius side of the information record medium. The medium is further provided with a mid area at the outer radius side of the first recording layer, and the other mid area at the outer radius side of the second recording layer.