| 摘要 |
<p>A technique for creating, recording, and reading a system file image for an optical disc is disclosed, the technique being capable of utilizing the limited data area of an optical disc in an improved manner. A system file image of user data which is created using this technique includes a first file system section describing the user data in a first format, a second file system section describing the user data in a second format and having a length larger than a length of the first file system section, and a volume descriptor section describing the first and second file system sections in the first format and the second format. By reducing the amount of information stored in the first file system section, the data area of the optical disc is more effectively used.</p> |
