[SOLVED] multiple SATA boot drives not showing up in BIOS

[jpljoseph]

Hello, I just fresh installed windows onto a new m.2 ssd. I did so with all other drives detached. Upon reconnecting the other drives, I can access them without a problem. They appear in my bios, but when i try to change the boot priority they do not appear. I think they may be on a different version of windows, but am unsure. Both of the other drives are sata drives, one hdd, one ssd. Ive tried booting on uefi + legacy and just with uefi, makes no difference.
Currently running windows 10 home version 20h2
My mobo is msi 2390 gaming edge ac

Any help is greatly appreciated.

 

[Colif]

does the bios use Windows Boot Manager to boot the drives? or do you individually put the drives in the boot order?

Its possible you need to use something like this to add the drives into the Boot config data of windows so it lets you use other drives -
https://www.lifewire.com/how-to-rebuild-the-bcd-in-windows-2624508

I know you use bcedit to add new drives to boot loader, see if that does it before i find another way