| 摘要 |
A technique of creating, recording, and reading a system file image for an optical disc are disclosed, capable of utilizing the limited data area of the optical disc. The system file image of user data, 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 amount of the data area of the optical disc is used more effectively.
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