Yes, you will need to re-format. OS X cannot write to NTFS volumes. You could format as MS-DOS (FAT32) to make the drive cross platform if that is desired. On Mar 12, 2007, at 10:02 AM, Neil wrote: > I have the Tvisto 3500 multi-media hard drive. It comes pre- > formatted with the required file structure in the Windows NT file > system. I only have permission to read, not write to the drive. > Of course, that makes the drive useless. I need to copy media > files to the drive so I can play them on my home theater. So, how > do I change the permission? Do I have to reformat the drive to HFS > +? The docs say that the drive supports this. > Thanks._______________________________________________