So, I have two drives. #1 is a 1TB M.2 SSD, I’m currently dualbooting W10 and Linux Mint. (Please don’t hate, I use Windows only for work, cannot drop it. #2 is an older 250GB Sata SSD, it’s empty. I want to fresh install both OSs to #2 and use #1 as home for Linux.
Problem:
Drive #2 doesn’t show up as boot option in EFI (MSI Z690-A), only #1. When I boot into Windows setup from USB, I can start the installation, but it wants to reboot during the progress and I can’t choose #2 at all. So it boots into Linux, I see unfinished Windows on #2 but can not do anything about it.
I’m no beginner, but I’m clueless here. Any help?
Always install Windows first. Mint should be able to find your Windows install and have it as a bootable selection.
A quick fix you could try is to boot into Mint and reinstall the kernel. Itll run through the mkinitcpio and os-prober process and potentially add your Windows disk to the boot selection.