linux-zak:/home/zak # umount /dev/sdb1
umount: /dev/sdb1: not mounted
linux-zak:/home/zak # mount /dev/sdb1
$LogFile indicates unclean shutdown (0, 0)
Failed to mount '/dev/sdb1': Operation not supported
Mount is denied because NTFS is marked to be in use. Choose one action:

Choice 1: If you have Windows then disconnect the external devices by
          clicking on the 'Safely Remove Hardware' icon in the Windows
          taskbar then shutdown Windows cleanly.

Choice 2: If you don't have Windows then you can use the 'force' option for
          your own responsibility. For example type on the command line:

            mount -t ntfs-3g /dev/sdb1 /media/JUKEBOX-1 -o force

    Or add the option to the relevant row in the /etc/fstab file:

            /dev/sdb1 /media/JUKEBOX-1 ntfs-3g defaults,force 0 0
linux-zak:/home/zak #             mount -t ntfs-3g /dev/sdb1 /media/JUKEBOX-1 -o                                              force
$LogFile indicates unclean shutdown (0, 0)
WARNING: Forced mount, reset $LogFile.
fuse: failed to access mountpoint /media/JUKEBOX-1: No such file or directory
FUSE mount point creation failed
Unmounting /dev/sdb1 (JUKEBOX)
linux-zak:/home/zak # mount /dev/sdb1
fuse: failed to access mountpoint /media/JUKEBOX-1: No such file or directory
FUSE mount point creation failed
Unmounting /dev/sdb1 (JUKEBOX)
linux-zak:/home/zak # umount /dev/sdb1
umount: /dev/sdb1: not mounted
linux-zak:/home/zak #