Here is the latest I get: Actually something changed in 12A43 or 12A50. Preventing writing to the drive from applications. It also removed the ability to look up hidden drives like /Volumes when modifying a shortcut's destination location. Basically it was a surgical strike against people using native NTFS in Mountain Lion. (especially from GUI side). I'm running 12C60. I may plug the drives into my old G4 PowerBook and I should be able to recognize and read/write from there but that's not the optimal solution for me. I did read where you can go into /etc/fstab.hd and change it to ignore the ignore this drive file in there. That's above my pay grade though.