I was given a 2.5" USB Sumvision SATA drive by a PC friend of mine. On the box it says it will work with OSX. When I plug it in it appears on the desktop but I cannot format (the options are greyed out in disk utility) or copy to it. It's currently in Windows NT format (which I know the Mac can't copy to). I don't have anything like Norton that could possibly help. I run a G4 quicksilver 10.3.9 (old I know). Am I missing some software or is my kit to old to run SATA? Should I just give him his disk back and say thanks but I don't really need it?