$ mount | grep local c:\usr\local on /usr/local type user (textmode) c:\usr\local on /usr/local type system (textmode) c:\usr\local on /usr/local4 type system (textmode) c:\usr\local on /usr/local3 type system (textmode) c:\usr\local on /usr/local2 type system (textmode)
$ umount /usr/local4 umount: /usr/local4: No such file or directory