CD-ROM (ISO9660) filesystem

The limits for CD-ROM (ISO9660) filesystems include:

Filename length
32 bytes for basic ISO9660, 128 for Joliet, 255 for Rockridge.
Pathname length
1024 bytes.
Disk size
This filesystem also uses a 32-bit (4 GB − 1) format. We don't allow the creation of anything via; it's read-only. Any limits would be imposed by the tools used to make the image (which hopefully would be a subset of ISO9660). Disk size is also limited by the disk driver and io-blk.
Note: We've deprecated in favor of, which now supports ISO-9660 filesystems in addition to UDF. For information about the limits for UDF, see "UDF filesystem," later in this chapter.