Hi Guys and Girls. I've recently bought a 320GB Seagate SATA drive (ST320LT023, although strangely can't find it on there site under that) to upgrade the current 80GB drive in my Macbook Pro. Swapped the drive in and booted off of the OS X install CD, ran the Disk Utility to format HDD but it reports it back as 2.33TB and will not format. Checked it under Windows and it returns it as described, 320GB and the same model number. I replaced the 80GB original drive and it worked fine so I'm guessing the controller is working, my question is it an old legacy hardware limitation where the drive cannot be larger than 120GB?