[citation][nom]weatherdude[/nom]I think I remember reading something about BIOS having a 2 TB limitation. That means to use larger disk you need UEFI.[/citation]
Kind of. Usually you can solve it by loading up a new BIOS revision or getting a 3rd party SATA controller.
However, sometimes you get a situation when a system can run drives larger than 2.2 TB thanks to the operating system, they just can't boot to drives larger than 2.2 TB, since the limitation comes in with the MBR.
But yes, EFI has supported more than 2 TB for a long time now (up to 9.4 ZB I think). Why the market has not gone to EFI yet (except Apple, they went to EFI a LONG time ago) is beyond me, I see absolutely no reason why we should still have BIOS around.
Actually I take that back. The reason why the market has not gone to EFI yet is because Windows XP and 32-bit versions of Windows Vista/7 are still heavily used, which do not have support for EFI. And so I will have to patiently wait for Windows XP to die, or until motherboard manufactures start releasing boards with EFI on them.
BUT, this still doesn't explain why enthusiast motherboards don't have EFI on them. I think it is safe to say that the vast majority of the enthusiast community use 64-bit Windows 7. There are a few EFI boards out there, but the selection is tiny.