I have what seems to be a perfectly working system. Except unmount doesn't seem to work:
root@localhost mnt # unmount /mnt/store
bash: unmount: command not found
I have not done a emerge -u world in a few weeks so my system is a little behind the times. But I doubt that is the problem.
Strange, because mount works fine. I did a quick search of the forums and google and nothing jumped out at me.
thanks,
Cedar

