[SOLVED] M.2 SSD not detected in BIOS, but can boot normally when selected in boot selection menu (f12) ?

[geckovic02]

Hi everyone

My friend had a wierd issue, where after moving to a new SSD + fresh Windows install, he always needed to select the new SSD (M.2 NVME) in the bios selection menu. Even after formatting the old ssd, it would still show up as a boot drive (Probably because we haven't removed all partitions).
Now when trying to change the boot order in the bios, it would never save, making him use the boot selection menu every time.


We decided to update the bios... And that's where the magic begins:

His new SSD isn't showing up in the bios anymore. Even after unpluggin every other drive and only using the m.2, it's not showing up.
But it does show up in the F12 boot selection menu. It can also boot normally into Windows. As soon as we plug in the old SSD (SATA) it would try to boot into that one. So again, he needs to use f12 to select the correct drive.

His Hardware:
R5 2600
Gigabyte B450 Aorus Pro
M.2 SSD: (Kingston) Gen. 3, NVMe
Bios Version: newest one, downloaded over the APP center (16th of April, 2022)
Windows 11

Any ideas to fix that?

 

[Colif]

it has to be in the bios, if F12 works, as its in the bios too.

It won't show in the sata area as its an NVMe
it should show in the peripherals section
i can't see it in the manual though,

maybe the updating bios changed the boot method. UEFI CSM is the default in the bios, you could try disabling it
page 31 of manual - https://download.gigabyte.com/FileL...190528.pdf?v=be803b566458d720ce771b7871427434

 

[SkyNetRising]

Any ideas to fix that?

Probably windows on one drive is installed in legacy mode and
windows on the other drive in UEFI mode.

Windows 11 should be in UEFI mode.
So - disable CSM in BIOS. The other SATA SSD will not be able to boot.
Put Windows Boot Manager as first in BIOS boot priority settings.

 

[geckovic02]

Update:

When removing the old drive (so only his m.2 is present in the pc), it's still not showing up in the boot order section (there's just nothing to select). Windows 11 is correctly set up, csm is disabled, etc.

He's still booting into Windows every time with F12.

 

[SkyNetRising]

When removing the old drive (so only his m.2 is present in the pc), it's still not showing up in the boot order section (there's just nothing to select). Windows 11 is correctly set up, csm is disabled, etc.

In UEFI boot mode - boot entry for your bootable storage device will be shown as Windows Boot Manager.
You will not see your drive listed in boot priority.
This is one thing different, when comparing legacy boot and UEFI boot.

 

[dwd999]

Update:

When removing the old drive (so only his m.2 is present in the pc), it's still not showing up in the boot order section (there's just nothing to select). Windows 11 is correctly set up, csm is disabled, etc.

He's still booting into Windows every time with F12.

The Windows installer really does not work properly if more than 1 drive is connected at the time of installation. He will most likely need to reinstall Windows with just the 1 drive connected and add additional drives after installation and updating is complete. He will need to use a real disk partitioning tool like Gparted to remove all of the partitions on his old drive. Gparted can also be used to ensure that all his disks have GPT identifiers.