Enabling UEFI, wont boot into Windows 10 , goes straight into BIOS?

ShiWarrior · 12 Nov 2021 at 12:33

Hi all

Curious to why enabling UEFI makes it boot into BIOS and not windows ?

I have a x570 Tommahwak wifi with the 3600 cpu
using the m.2 slot for my ssd

any ideas?

Armageus · 12 Nov 2021 at 12:48

Fairly sure that a non-UEFI windows install won't have the required partition that the UEFI bootloader looks for, and as it can't find anything just loads the default UEFI shell (i.e. the BIOS)

Orcvader · 12 Nov 2021 at 13:14

As above, if you installed via legacy, you need to convert Windows to UEFI.

In disk management, for the boot disk, right click -> properties, is the partition style MBR or GPT?

If it's MBR you'll need to use MBR2GPT (built into Windows, via command prompt) to convert it and then change the BIOS settings to UEFI.

ShiWarrior · 12 Nov 2021 at 13:17

thanks guys

yeah i installed windows 10 again just last week, so i dont fancy doing it again lol

ShiWarrior · 12 Nov 2021 at 13:21

Orcvader said:
As above, if you installed via legacy, you need to convert Windows to UEFI.

In disk management, for the boot disk, right click -> properties, is the partition style MBR or GPT?

If it's MBR you'll need to use MBR2GPT (built into Windows, via command prompt) to convert it and then change the BIOS settings to UEFI.

not sure i follow

Doing that, is the same way as going to exploerer and right click > properties on the drive, comes up with same windows, but i cant see anything in there that relates to MBR or GPT ?

Orcvader · 12 Nov 2021 at 13:24

ShiWarrior said:
not sure i follow

Doing that, is the same way as going to exploerer and right click > properties on the drive, comes up with same windows, but i cant see anything in there that relates to MBR or GPT ?

Under the Volume tab:

ShiWarrior · 12 Nov 2021 at 13:32

this is all i can find

pressing populate dosent work

Orcvader · 12 Nov 2021 at 13:40

You're looking at the partition properties, hence why I suggested checking in disk management:

ShiWarrior · 12 Nov 2021 at 13:57

Orcvader said:
You're looking at the partition properties, hence why I suggested checking in disk management:

ah !
cheers

mine says MBR

Orcvader · 12 Nov 2021 at 14:22

In that case you'll need to convert it to GPT. Just realised Disk Management does offer it from the same context menu (Should say Convert to GPT Disk), I would imagine that's the same as doing it via command prompt.

Highly recommend to back everything up just in case, and once it's done, make sure to go into BIOS and change to UEFI boot.

ShiWarrior · 12 Nov 2021 at 14:59

Orcvader said:
In that case you'll need to convert it to GPT. Just realised Disk Management does offer it from the same context menu (Should say Convert to GPT Disk), I would imagine that's the same as doing it via command prompt.

Highly recommend to back everything up just in case, and once it's done, make sure to go into BIOS and change to UEFI boot.

cheers
checked, and its greyed out, only available is convert to "Dynamic Disk"