I had some NTFS formatted external USB drives. cd /sbin sudo mv mount_ntfs mount_ntfs_orig Edit a file called mount_ntfs and put in these contents... #!/bin/sh /sbin/mount_ntfs_orig -o rw,nobrowse "$@" Then make it executable... sudo chmod a+x mount_ntfs Plug in your USB drive now. cd /Volumes ls Remember the name of your volume as listed. Make a shortcut on your desktop to any application. Right click on the shortcut and Get Info. Point the shortcut to your USB drive by going into /Volumes/NAMEOFYOURUSBDRIVE Now, you can double click on the shortcut and use the Finder to navigate and do stuff to your USB drive (reading AND writing). Ok. The above worked until patch 12C43 or 12C50. So if you are not using the developer patches above, and are on 10.8.1, 10.8.0, or a patch earlier than 12C43, you can read AND write to NTFS. Lost a lot of files in USB drive after upgrading to 12C43 or 12C50. /sbin/mount_ntfs supports reading and writing NTFS drives.