I bought a 8TB hard drive (SATA) to use in my Vista 64 bit computer. Now I thought Vista 64 allowed bigger drives than 1 or 2 TB. But I wasn't able to format the drive in this computer, so I did it in my modern day computer. When I install the 8TB back in the Vista 64 system, it reads the drive, but wont actually access the files on it. It gives a I/O error while freezing up. Does this mean there is still technically a hard drive limit with Vista 64? What is the max I can safely use- 1TB or 2TB?