So I have a 1.5TB external HD, 200GB is set to OSX Extended and the rest is NTFS, with half of the NTFS unused. How can I convert some of the NTFS volume to OSX? Would I have to use the HDD on Windows and somehow break apart some of that free space (without deleting the other data...) then just addend it on a Mac? How could I do this? THANK YOU!!!!!!!1two!11