I stupidly changed the shell of the root user to one that does not exist, and now when I try to lgon it says it cannot find the path to my shell and will not let me proceed any further. Is there any way I can get round this without re-installing the OS?

Thanks for any replies.

check a live-cd-os like knoppix
http://www.knopper.net/knoppix/index-old-en.html
, mount your fs and correct it

greetings Preßy

What OS are you using? If you are using a Linux variant, then you can easily overcome this with Toms Root boot.Toms RooT BooT

Thanks for replying guys, I'm using FreeBSD 5.1 Unix.

You should be able to boot into single user mode "boot -s" when prompted and mount your file systems and modify the entry.

I can't remember for sure but I believe that the boot process will either ask you for a shell to use or use /bin/sh by default.

Of course, all of this is coming off the top of my head.

I have booted into single user mode but it wont let me do anything. I cant run the 'chsh' command and it wont let me edit anything either. I cant even progress into the lower levels of the file system e.g. I can cd to /usr but not /usr/bin even though that directory exists. Anyone got any ideas?

After booting into single mode did you run a `mount -a` to mount all filesystems?