Patent ID: 7761868

Claim:
A method for recording information in an optical disk on which there is a first blank area where information is not recorded, a data recorded area where a first file system and application software for creating an information group are recorded, and a second blank area where information is not recorded, from an inner circumference side toward an outer circumference side of the optical disk, the method comprising: installing the application software with the first file system into an information processor; creating the information group by carrying out predetermined processes with the application software in the information processor; and according to instructions from the application software, writing a second file system conforming to a predetermined optical-disk-standard format in the first blank area, writing the created information group readable with the second file system in the first or second blank area at the outer circumference side relative to the second file system, writing lead-out information at the outer circumference side of the second blank area and making the application software and first file system in the data recorded area unreadable with the second file system.