EFI requires GPT

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Re: EFI requires GPT

Postby Kempy » Tue May 17, 2016 2:19 am

skipro wrote:
> Thanks everyone for replying.
> Setup:
> Secure Boot disabled
> CSM enabled
> UEFI/Legacy Boot option - Both
> Boot Priority - Legacy first
>
> Now I get the same GPT request with Win10 installation UFD with the SSD.
>
> I do not get an option to boot in either normal or UEFI mode, the boot
> choices are:
> CD
> HHD
> USB Lexar [Win10 installation medium]
> LAN
>
> If I change Boot option to Legacy only, the UFD will not boot.

I found sometimes that the Windows 10 installation media will boot in UEFI mode although the Bios is set to CSM mode and Secure Boot to disabled.
If the installation media is a UFD, the trick to do is to rename the efi folder on the installation media to eg. efi_old and the installation media will boot in CSM/Legacy mode for MBR installation.

G.
Kempy
 
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Joined: Sat Mar 01, 2014 2:29 am

Re: EFI requires GPT

Postby tas3086 » Tue May 17, 2016 7:45 am

Try this:
When powering on, press the appropriate function key to select the drive to boot from. F11 in my case for an Asrock MB. On my machine, for both USB and CD drives, it gives a UEFI and Legacy boot option for each drive. Select the non UEFI boot item to do your install.

Hopefully this will help you get further along.
tas3086
 
Posts: 212
Joined: Mon Mar 19, 2012 11:15 am

Re: EFI requires GPT

Postby mjnelson99 » Tue May 17, 2016 2:06 pm

On my laptop, I use F12 to change boot device.

An IFL boot SD card will show up differently on the choices.
I forget exactly what it was called. It was not the typical USB info.

I had to use the special link for IFL to run.
Mary

On 5/17/2016 9:45 AM, tas3086 wrote:
> Try this:
> When powering on, press the appropriate function key to select the

drive to boot from. F11 in my case for an Asrock MB. On my machine,
for both USB and CD drives, it gives a UEFI and Legacy boot option for
each drive. Select the non UEFI boot item to do your install.
>
> Hopefully this will help you get further along.
>
>
mjnelson99
 
Posts: 768
Joined: Thu Aug 11, 2011 6:24 pm

Re: EFI requires GPT

Postby TeraByte Support » Tue May 17, 2016 8:32 pm

good tip for getting UFD's and BIOS to do what you want.

another good one, when it says F11 for boot menu and F11 doesn't work, check
the keyboard to see if it's one of those with a "function lock" on it where
you have to enable that for function keys to work.


"Kempy" wrote in message news:11538@public.bootitbm...
> If I change Boot option to Legacy only, the UFD will not boot.

I found sometimes that the Windows 10 installation media will boot in UEFI
mode although the Bios is set to CSM mode and Secure Boot to disabled.
If the installation media is a UFD, the trick to do is to rename the efi
folder on the installation media to eg. efi_old and the installation media
will boot in CSM/Legacy mode for MBR installation.

G.

TeraByte Support
 
Posts: 2324
Joined: Thu May 05, 2011 3:37 pm

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