The problem could be as the message says:
- on tty2 there is a shell running - I suppose you started it
- in this shell you changed directory to /mnt/source - which is the place the CD is mounted to
It cannot be unmounted while something (as this) is still accessing it.
Go to that tty2, type "cd" or "cd /" and then try unmounting again.
(or: quit the shell - "exit" or "CTRL d")
Last edited by jomen; 10-27-2009 at 08:51 AM.