I have Knoppix 3.8 and created a system image (knoppix.img on /dev/hda1).

And I have apt-getted some software.

At shutdown, Knoppix says (sorry, but left margin ist cut off -- I've let it this way although I'm quite sure what characters are missing -- but better not invent something, eh?):

/pts unmounted
mount(pid262 unmounted
nm2: Device or resource busy
d not unmount /KNOPPIX.img - trying /dev/loop0 instead
nt: /dev/loop0: not mounted
nt2: Device or resource busy

and hangs forever.

I have to push the reset button and on rebooting Knoppix finds the image file and I enter the password.

/home/knoppix mounted OK from /mnt/hda1/knoppix.img.
/usr/sbin/knoppix-image: line 193: 2502 Segmentation fault cp -a /etc/mtab /UNIONFS/etc/mtab 2>/dev/null

Can anyone help me? I'd very much like to use this feature.