Convert to UEFI

Let us know what you end up doing and how it works out.

Form the Arch wiki you can do secure boot with Linux, but I have no idea how well it works or how sustainable it would be, ie I’ve not done it myself. Sounds like a real pain to me to maintain.

Regardless make sure you back up anything that’s important because things are more likely to break than work the first time around.

Yes I did also some reading about this secure-boot, and I agree it sounds like (for me) difficult to maintain on Arch.
There are distro’s that will work with secure-boot (openSUSE,Ubuntu and Fedora)
But I think that I will put it on hold…
On this moment it is not necessary for my games to switch to W11

I wouldn’t be that concerned about secure boot. You can install Windows 11 and just disable it.