Re: iso9660

[Tom Pfeifer <tpfeifer@snet.net>]

iso9660 support can be either compiled directly into the kernel, or it
can be compiled as a module. When compiled directly into the kernel it
is always available, while in the case of a module, the module must be
loaded (inserted into the kernel) before it can be used. The command
'lsmod' will list modules currently linked to the kernel. 

isofs is the name of the module for iso9660 support. The command 'insmod
isofs' can be used to manually load the isofs module, assuming it is
available. You can see what modules are available for loading by
looking in /lib/modules/2.0.XX/fs, where 2.0.XX is the revision of your
kernel (like 2.0.35 or 2.0.36 etc). You can see what kernel you are
running by using the 'uname -a' command.

The proc file system exists only in memory, not on disk. The file
/proc/filesystems is simply the kernel's listing of the available
support for file systems. Even if you could edit it, it wouldn't help.
Once you make isofs support available to the kernel (i.e. by loading the
module or compiling it into the kernel itself), it will be listed
automatically in proc/filesystems. That is the result, not the cause.

For more information, try 'man insmod' and 'man lsmod'. There is also a
command rmmod that, opposite from insmod, can be used to manually unload
a module. See 'man rmmod'
 
Tom