UEFI Hard Drive??

xanderxxz

xanderxxz

xanderxxz

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12 Jun 2012
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Hi, I put this in general thread as it relates to hard drives motherboards and the rest of my lacking knowledge.
I recently flashed my bios of my MSI Z77a-GD65 motherboard to the latest bios and i can no longer get into windows. My motherboard has duel bios so i can get in if i switch to the older bios version, but i want to try and fix the other one to.

The bios works and was flashed fine, the computer boots up and posts but i get a message that there is a missing file "File;\Windows\system32\winload.exe" and error code "0xc000000e".

There is also another option in the bios under boot for UEFI hard drives, under which my hard drives arent listed.

Does anyone know what a UEFI hard drive is, and can someone please explain to me how to format for UEFI so that i can reinstall windows.

any help would be much apreciated :)
 
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Your file 'winload.exe' has been probably deleted/damaged and it's the reason why you can't boot. For example, if you flashed back BIOS or switched older one to current, you wouldn't be able to boot Windows anyway. To restore this (and maybe other files) you should boot the Windows DVD and pick some repair option, or use "bootrec /rebuildbcd" from its shell.

UEFI hard drive means - probably - nothing more like GPT-like partitioning style of ANY drive. So no matter which drive you've got, matters partitioning style. If it's GPT-style then your BIOS would treat that drive as UEFI drive, otherwise (MBR-style) it remains "standard" drive. But it doesn't mean you can't boot - because you can - but from standard drive, of course if filesystem is errorless (see ny first part). Does your boot queue contain any "hard drive" (no EFI) position ? If not - maybe it's a BIOS revision bug to report :)
 
Hi, my boot queue contains "UEFI Hard Drive, UEFI usb drive, uefi network ect..." and then all the same but without UEFI. The ones without UEFI are under which my hard drives are, for instance my samsung ssd with windows on it is "HARD DISK: SAMSUNG ssd" not "UEFI HARD DISK".

Also i can boot into windows, and have been using windows just fine, but only on the older bios. When i flick the switch on the motherboard to use the old bios then all the UEFI hard drives and usb drives ect. in the bios dissapear.

Basicly on the bios update they added features for UEFI hard drives (which after some googling have found to be GPT ) and i can no longer use my windows install (on that bios)
 
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UEFI (Unified Extensible Firmware Interface) is a standard firmware interface for PCs, designed to replace BIOS (basic input/output system). This standard was created by over 140 technology companies as part of the UEFI consortium, including Microsoft. It's designed to improve software interoperability and address limitations of BIOS.

All 64-bit versions of PCs running Windows with a logo from the Windows Certification Program will use UEFI instead of BIOS. To learn more about your PC's support of UEFI, see the product info that came with your PC.

something else must change in the bios between revisions is achpi or whatever is on?
 
Im quite confused, i think i need to format my hard drive for GPT and then reinstall windows...


EDIT: i built this pc so im kinda on my own, i just dont understand why i now have settings for "UEFI hard disk" and "Hard disk" in my boot settings on my bios???
 
Fixed it :)

Thanks for the responses. I think the bios update changed some of the boot modes to alow GPT hardware, and the legacy mode for MBR hardware wasnt properly working and so all my hard drives (MBR) didnt work with it, or at least my OS SSD didnt. To reinstall windows with on a GPT hard drive, installed it from a USB, but i had to choose the UEFI usb option in the boot menu.

There was literally nothing about this anywhere, very weird. Oh well, thanks people for quick replies :)
 
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