Question New SSD not showing in Boot

[Snottco]

I have a z790 UD AX motherboard which I just installed a new SSD and installed windows on it. In my boot settings I don't have the option to boot from it, only 2 of my old drives. To enable CSM, I have to disable Safe Boot, however, if safe boot is disabled, windows 11 doesn't function. Any help?

 

[BFG-9000]

If you installed Windows while multiple drives were attached, then the installer may well have decided to put the boot partition on one of your old drives. So it would be correct that there is no bootable partition on the new SSD so you shouldn't be able to boot from it.

This is why we never recommend installing Windows with more than one drive attached--should the old drive die or be removed, Windows will no longer be able to boot.

 

[Snottco]

If you installed Windows while multiple drives were attached, then the installer may well have decided to put the boot partition on one of your old drives. So it would be correct that there is no bootable partition on the new SSD so you shouldn't be able to boot from it.

This is why we never recommend installing Windows with more than one drive attached--should the old drive die or be removed, Windows will no longer be able to boot.

So if I remove that drive, reinstall windows again to the new SSD, I should be good? Is there a way to remove that partition from the old drive? I've already formatted it after using it to get to windows on the new one