Rock Ridge
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Rock Ridge is an extension to the ISO 9660 volume format.
The extension adds support for storing Unix-specific file information on ISO 9660 CD-ROMs.
These extensions are, briefly:
- Longer file names (up to 255 characters)
- Fewer restrictions on characters allowed in filenames
- UNIX-style file modes, user ids and group ids
- Symbolic links
- Deeper directory hierarchy