Should I reinstall my computer to boot with UEFI?

Mostly I was wondering if there were any noticeable performance differences, or anything that would warrant me making the switch.

bobkn said:

I've installed Win7 on a few UEFI motherboards. They were from Asus, and offered UEFI and non-UEFI mode boots for the install media (in my case, a USB flash drive). I chose non-UEFI, and the installation always proceeeded normally. (My boot drive was a 120GB SSD in all cases, and the largest data drive was 1.5TB.)

I definitely get a full mouse driven GUI for the CMOS settings, on all systems.

FuturDreamz seems to think that there's something different in the two installations, beyond GPT vs MBR. I thought that they were the same, excepting GPT. What's correct?

Bob, you were able to choose in BIOS non-UEFI installing to a GPT and there were no special installation steps required? UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with - Windows 7 Forums

We have a case now where the only UEFI listing found in BIOS is EFI disk in boot order, which either selecting or not seems to make no difference even with the special steps taken in tutorial above.

gregrocker said:

Bob, you were able to choose in BIOS non-UEFI installing to a GPT and there were no special installation steps required? UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with - Windows 7 Forums

We have a case now where the only UEFI listing found in BIOS is EFI disk in boot order, which either selecting or not seems to make no difference even with the special steps taken in tutorial above.

I'm out of my depth here.

I used the one-time boot order option (F8 with an Asus motherboard, annoyingly the same as the Windows boot mode hotkey). There were two choices for the USB flash drive I wished to boot from. One was listed as UEFI, the other was not. I used the non-UEFI version, and the Win7 installation proceeded in the traditional manner. The SSD was the only HD attached to the motherboard during the install, so I let the installer partiton and format it automatically.

I've never checked whether the drive used an MBR or GPT, but I assume that it's the former.

Well, I tried reinstalling.

I made sure UEFI was enabled and all that stuff, but Windows reinstalled as BIOS.

I'll try again when Windows 8 comes out.