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Booting into Windows 8 from a GPT hdd and UEFI compatible motherboard

Last response: in Storage
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December 22, 2013 6:52:34 AM

Not sure if this should be in the storage, motherboard, or Windows 8 forums, but

I'm trying to boot to Windows 8 Pro from a Western Digital WD Black WD2002FAEX 2TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive

My motherboard is a Gigabyte GA-Z77X-UD3H (rev. 1.0).

The HDD is formatted as GPT (I'm sure) and the motherboard is UEFI compatible, I think (It has a feature called "GIGABYTE 3D BIOS (Dual UEFI)")

I'm not sure if it's a problem, but the HDD is not listed as UEFI in the BIOS screen, unlike another HDD I have in the PC.

When I select the WD Black HDD as the boot drive I get the error 'reboot and select proper boot device'

But when I select "Windows Boot Manager" as #1 boot priority the WD Black HDD loads Windows 8 just fine.

What I'm wondering is if this is the correct way to do it with the new UEFI system or should I be able to boot from the actual HDD as the #1 boot priority.
a b V Motherboard
a c 80 G Storage
December 22, 2013 3:25:05 PM

Sounds like windows was installed as a Legacy Boot Loader and not a UEFI Boot Loader. All this depends on how windows was installed. If you booted from the DVD to Install it under the Windows Boot manager it will install using the Windows Boot Manager. If you loaded the DVD with the UEFI Options then it would have installed it as UEFI.
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December 22, 2013 7:34:11 PM

drtweak said:
Sounds like windows was installed as a Legacy Boot Loader and not a UEFI Boot Loader. All this depends on how windows was installed. If you booted from the DVD to Install it under the Windows Boot manager it will install using the Windows Boot Manager. If you loaded the DVD with the UEFI Options then it would have installed it as UEFI.


The DVD drive I installed it with is an external optical drive. I'm not sure I understand what you mean by "loaded the DVD with the UEFI Options." Do you mean loading UEFI drivers or something during the Windows partition screen where you can "load drivers"?

I don't recall selecting anything about Windows Boot manager during the install.

So I guess I'm wondering how I load "the DVD with the UEFI options" for installing windows and if you think there are any potential problems or future problems I might run into with keeping Windows 8 booting from Boot Manager.

As I write this I found this write up that looks like it would have helped if I had it before hand....http://windowsitpro.com/windows-8/q-what-tips-will-help...
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a b V Motherboard
a c 80 G Storage
December 22, 2013 8:11:39 PM

Well are you 100% sure its a GPT partitioned hard drive? because if its not that probably the main problem.
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December 22, 2013 11:42:31 PM

drtweak said:
Well are you 100% sure its a GPT partitioned hard drive? because if its not that probably the main problem.


I'm 100% sure that the HDD is a GPD partition. I've checked multiple times in Disk Management.

According to that link I posted it suggests it's because I didn't either disable CMS in the BIOS or because the DVD optical drive I installed Windows with was not registering with the BIOS as a UEFI device.
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December 23, 2013 6:57:45 AM

After more digging, google searching, and experimenting I think I found my solution/problem, so for the sake of posterity or others who might have this problem here it is:

If you are installing Windows 8 Pro with a retail DVD in UEFI you need to have the install disk in the DVD drive before the BIOS loads and then in the boot options you need to select the DVD boot option that has "UEFI:" as a prefix as there is likely 2 DVD drive options to select as your boot drive. I likely selected the non "UEFI:" DVD drive option and so when I completed installing Win 8 Pro I had to boot the drive from the Windows Boot Manager instead of being able to boot directly from my HDD.

This guide was the one that set me straight and if you want to install Windows 8 in UEFI I suggest using it.
http://www.eightforums.com/tutorials/2328-uefi-unified-...
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December 23, 2013 9:19:04 AM

Well I tried reinstalling windows, with what I thought was the correct way, but I still have to select Windows Boot manager as the boot priority to load windows. The HDD I installed Win 8 on still doesn't have a "UEFI:" prefix on it, but if I run msinfo32 after loading with Boot Manager it says "BIOS Mode UEFI". The thing that is troubling me is that on my old hard drive that I had originally installed windows on, and this is like a 10 year old WD hard drive 160gb, it has the "UEFI:" prefix on it in the boot order selector.

My other concern is what the boot order should be when installing Win 8. For the entire installation the boot order was 1. UEFI DVD Drive, 2. HDD and I left the install disc in until Windows had completed installation and I was on my desktop screen.
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Best solution

a b V Motherboard
a c 80 G Storage
December 23, 2013 12:04:38 PM

Check the Bios. Make sure nothing is set to Legacy. I know some some Dells that i work on you can either do Legacy, UEFI, or Both. check to see if those options are under the Boot Menu. If so make sure its set to UEFI only and then check out.
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December 23, 2013 12:15:22 PM

drtweak said:
Check the Bios. Make sure nothing is set to Legacy. I know some some Dells that i work on you can either do Legacy, UEFI, or Both. check to see if those options are under the Boot Menu. If so make sure its set to UEFI only and then check out.


I got some help on another forum and it seems like I did everything right, I was just surprised about having to boot from Windows Boot Manager instead of HDD. I'll send the best answer you're way since no one else tried to help.

http://www.eightforums.com/tutorials/2328-uefi-unified-...
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