$ mount
/dev/disk0s2 on / (hfs, local, journaled)
devfs on /dev (devfs, local, nobrowse)
map -hosts on /net (autofs, nosuid, automounted, nobrowse)
map auto_home on /home (autofs, automounted, nobrowse)
localhost:/x7suibv3e_VVTtDMdR30qy on /Volumes/MobileBackups (mtmfs, nosuid, read-only, nobrowse)
/dev/disk1s1 on /Volumes/Untitled (ntfs, local, nodev, nosuid, read-only, noowners)
$ sudo umount /Volumes/Untitled
$ mkdir ~/Desktop/USB
$ sudo mount -t ntfs -o rw,auto,nobrowse /dev/disk1s1 ~/Desktop/USB