Optical disk recording/reproducing method and recording/reproducing apparatus and optical disk

摘要

An optical disk medium (100) in which a learning area can be expanded, an optical disk information recording method and an optical disk apparatus are provided. A first lead-in area (102) and second lead-in area (104, 105) are provided on the inner side and outer side of a data area. The first lead-in area (102) includes a first learning area (201), management information recording area (202) and data connection area (203) and the second lead-in area (104, 105) includes a protection area (104) which protects the user data in the inner portion thereof and a second learning area (105) which is provided on the outer side of the protection area and sets an optimum condition for an operation of recording data into the data area. An area in which information indicating the utilization state of the protection area is recorded is prepared in one of the management information recording area and data connection area.