Ok, so I have a 1TB Seagate external drive hooked up to my Mac Book Pro, Works great with MAC OSX but I had to install Tuxera for it to function to write with the Mac OS, initially it worked great with Windows 7, after a few weeks of using it exclusively with Mac OSX I booted into Windows 7 and it says I have to format it before I can use it, just to make sure the drive was still working I booted back into Mac OSX and it works fine so whats the deal?