UEFI Bios Boot order resetting

[TruffleShuffle]

Just wondering if anyone else has experienced the same issue as me:

I have 2 bootable Hard Drives, one has Windows 11 on, the other has Windows 10. The Windows 10 one is my old drive and there purely incase the Win 11 drive blows up in some way.

The BIOS is set to boot to the Win 11 drive and then fallback to the Win 10 drive if it must. But every 3 months or so, seemingly at random, i'll switch on the PC to find it boot to Windows 10 and i'll need to restart it to the BIOS and switch the boot order back to be correct.

Anyone else had anything similar?

 

[TruffleShuffle]

why not just disable the Windows 10 drive in the boot order in the bios altogether and just enable it if your windows 11 drive goes down, by disabling it in the boot order you will still see it in Windows as normal, the bios just wont try to boot from it unless you enable it.

I think the BIOS just automatically recognises it as a bootable drive and i cant disable it. But i'll check.

Do both drives have MBR partitions on them? Maybe there is some kind of conflict. If the windows 10 is a fall back then just disconnect the sata cable on the drive side or whatever easier to get to. Leave cable there though.

Doh, forgot to ask... are these sata ssd's?

Yes both are SSD's, the older is a SATA SSD, the new one is an M2