kolorafa , 6 hours ago (edited 6 hours ago)

Looks like the installer and grub is confused about the hard drive order different in instaler and different while booting, both those drives could also have the same partition/drive ID making it confused, that could happen if you cloned/copied the drive in the past

I would say as a easy and safe solution

1. unplug all other drives that you don’t want install linux
2. Install Linux (best by formatting whole drive) - it should work just fine at this point
3. After confirming everything works - connect the other drives back
4. If Linux no longer boots after adding drives then tweak disk boot order in BIOS