umount device busy

[Wojciech Puchar]

>
> As nearly as I can tell, I don't have anything pointing at that drive.
>
> Questions:
>
> 1.  What does the "No such file or directory" mean from mkdir?
>    It's a relative dir name, and I'm sitting at a valid dir.

no NTFS driver for FreeBSD is really well done. fusefs based ntfs driver 
in my opinion is more usable (but not really good)

try umount -f