Dave:

> > Dave:
> > 
> > Most versions of the Linux ISO9660 filesystem driver support read-write.
> > Did you specify "-o rw" in your mount options?  Here is what I would do
> > to get a huge ISO image file mounted read-write:
> > 
> > mount -t iso9660 -o loop,rw /tmp/huge.iso /iso
> > 
> I tried -o rw, and I still get 'read-only file system' when I try to cp
> a file into the mounted iso :-(

You should send the outputs of the following commands to me or the list:

mount
cat /proc/mounts
df

Run those commands before & after you mount the ISO image via loop, and
send the before & after output.

I can only think of a few reasons why this would be the case:

1. The filesystem on which the .ISO image resides is full or corrupt.
2. The filesystem on which the .ISO image resides is mounted read-only.
	(Or, maybe you are actually mounting a CD-ROM, not a .ISO image.
	Or, perhaps it's on a read-only network share - NFS, SMB, etc.)
3. The ISO9660 filesystem driver in your kernel doesn't support read-
	write.  This would be unusual, but maybe not for an old kernel?
4. You are doing something wrong in specifying the rw option.  If you
	did a remount, maybe you didn't specify the remount option?
5. The .ISO image file that you are mounting as loop has the immutable
	attribute set on the host ext[23] filesystem.  (chattr +i)
6. Or, for some other reason (file ownership/permissions) the 
	filesystem is not permitting changes to be made to the 
	image file.

Hope this helps..

--
Jim Ockers (ockers@ockers.net)
Contact info: please see http://www.ockers.net/

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