6. CD block file system

-Volume descriptor: It is allocated from CD 00:02:16 (FAD = 166 = A6H).
.. (Generally 2 seconds and 16 frames from the beginning of the last session)
-Path table: A set of path table records. The size and address of the path table
Recorded in the volume descriptor.
-Path table record: Corresponds to one directory (root, sub).
The record position is the directory number. (1 to n)
Information about the directory is described in the directory block.
Directory block: A collection of directory records. A directory block is a single file.
It is considered as Il. (Directory file)
-Directory record: Corresponds to one file (including directories). 

Figure 6.1 Data structure of file management on CD-ROM (ISO9660)