For some cdroms the information in the Rock Ridge extension is wrong and the cdrom needs to be mounted with "norrip". A sign that something is wrong is that the
stat(2) system call returns
EBADF causing, e.g., "ls -l" to fail with "Bad file descriptor".
The cd9660 filesystem does not support the original "High Sierra" ("CDROM001") format.
POSIX device node mapping is currently not supported.
Version numbers are not stripped if Rockridge extensions are in use. In this case, you have to use the original name of the file as recorded on disk, i.e. use uppercase and append the version number to the file.
There is no ECMA support.