[SOLVED] My boot mode is in UEFI, yet I cant boot unless my BIOS is in CSM ?

[im_exotic]

I've had this issue for quite a while, but I'm only starting to realize its effect now. When I try booting in UEFI, the boot option appears but when clicked I'm taken right back to the bios, and boot fails. I checked my BIOS type and its still in UEFI. Any help?

 

[SkyNetRising]

Can you show screenshot from Disk Management?
(upload to imgur.com and post link)

Why do you want to change boot mode?

 

[im_exotic]

Can you show screenshot from Disk Management?
(upload to imgur.com and post link)

Why do you want to change boot mode?

A few games I want to play require use of secure boot, which I cant enable on CSM with my bios. My specs are :

MSI B550 A-PRO
Ryzen 5 3600
ASUS ROG 2060 6GB
16GB 3200MHZ RAM

 

[TerryLaze]

Bios will only boot in uefi if the disk is partitioned in uefi/gpt, even if it shows the option it doesn't mean that the disk is actually complient.
Check this link to check if your boot disk is gpt or mbr.
Full warning on converting, don't do it without a full backup or risk losing all your data.

How to Check if a Disk Uses GPT or MBR, and Convert Between the Two

Run the Disk Management utility from the Start Menu and view a disk’s properties to see if it uses GPT or MBR.

www.howtogeek.com

 

[SkyNetRising]

Your screenshot is too low resolution. Can't read it.
Please make a normal (not shrinked) screenshot and upload to imgur.com instead.

 

[TerryLaze]

A few games I want to play require use of secure boot

What games need secure boot? I never heard that, can you share what games these are?

 

[im_exotic]

What games need secure boot? I never heard that, can you share what games these are?

It was Valorant and another once which I can't recall the name. But mostly valorant.

 

[im_exotic]

Your screenshot is too low resolution. Can't read it.
Please make a normal (not shrinked) screenshot and upload to imgur.com instead.

https://imgur.com/yNaqX41

View: https://imgur.com/yNaqX41
Here's the link to the image

 

[im_exotic]

Bios will only boot in uefi if the disk is partitioned in uefi/gpt, even if it shows the option it doesn't mean that the disk is actually complient.
Check this link to check if your boot disk is gpt or mbr.
Full warning on converting, don't do it without a full backup or risk losing all your data.

How to Check if a Disk Uses GPT or MBR, and Convert Between the Two

Run the Disk Management utility from the Start Menu and view a disk’s properties to see if it uses GPT or MBR.

www.howtogeek.com

https://imgur.com/Y1eCark

View: https://imgur.com/Y1eCark
Disk 4 is my boot drive.

 

[TerryLaze]

https://imgur.com/Y1eCark

View: https://imgur.com/Y1eCark
Disk 4 is my boot drive.

Just to be clear, the drive with windows is not always the boot drive.
Go into windows and look what disk is first in the boot list, or press F12 (or whatever it tells you) when the pc boots to get into the bios boot menu, if you can start from disk 4 then we can start looking into other things.

 

[im_exotic]

Just to be clear, the drive with windows is not always the boot drive.
Go into windows and look what disk is first in the boot list, or press F12 (or whatever it tells you) when the pc boots to get into the bios boot menu, if you can start from disk 4 then we can start looking into other things.

I always boot from disk 4, I have it set to the main boot drive and when I press the boot menu I always choose it.

 

[SkyNetRising]

Here's the link to the image

Windows is installed in UEFI mode, but you have two EFI system partitions. That can cause confusion.

You should have two boot options:
Windows Boot Manager on 500GB drive and
Windows Boot Manager on 1TB drive.

 

[im_exotic]

Windows is installed in UEFI mode, but you have two EFI system partitions. That can cause confusion.

You should have two boot options:
Windows Boot Manager on 500GB drive and
Windows Boot Manager on 1TB drive.

Nope, that 500GB drive was pulled from an old MacBook. I can't boot from it.

 

[SkyNetRising]

Then you should delete EFI System partition from 500GB drive.

 

[im_exotic]

Then you should delete EFI System partition from 500GB drive.

I can't delete it, the option is blurred out

 

[SkyNetRising]

Disk Management does not allow deleting EFI system partition.
You have to use diskpart for that.

diskpart​

list disk​

select disk 1​

(select 465GB disk)​

list partition​

select partition 1​

(select 200MB EFI System partition)​

delete partition override​

​

Make sure you have windows install media prepared.
It may be necessary, if EFI system partition on 500GB drive was active bootloader.

 

[im_exotic]

Disk Management does not allow deleting EFI system partition.
You have to use diskpart for that.

diskpart​

list disk​

select disk 1​

(select 465GB disk)​

list partition​

select partition 1​

(select 200MB EFI System partition)​

delete partition override​

​

Make sure you have windows install media prepared.
It may be necessary, if EFI system partition on 500GB drive was active bootloader.

I did it, should I try booting in UEFI now?

 

[SkyNetRising]

Sure.

It may be necessary to reset secure boot state.
Delete security keys and load default security keys.

 

[im_exotic]

Sure.

It may be necessary to reset secure boot state.
Delete security keys and load default security keys.

Alright, I'll let you know how it goes.

 

[im_exotic]

Sure.

It may be necessary to reset secure boot state.
Delete security keys and load default security keys.

Alright. It booted normally. However, when I turned on secure boot I got this message when selecting my drive.

https://imgur.com/KiYxysp

View: https://imgur.com/KiYxysp

 

[SkyNetRising]

Do , what it says. Check Secure boot policy in BIOS.
Show, what you have there.

 

[im_exotic]

Do , what it says. Check Secure boot policy in BIOS.
Show, what you have there.

I tried looking for it, I couldn't find anything.