I finally managed to get Ubuntu installed on this mid-2010 iMac. Weird UEFI and working with grub is no joke. Now that I wrote down what I did, I want to try it all over but with Elementary OS. That was my original intent, but I switched to Ubuntu after many fails.
I know Elementary is a derivation of Ubuntu and I think my issues were not directly related to which OS. So it should work I think. Still it’s weird to break what I finally got working!
vis.social is an open social platform for creative people, especially anyone in sciArt, data, visualization, creative coding, and related arts and research. English is the common language of the instance.