Install Ubuntu 18.04 (mini.iso) on MacMini 2,1

Hi,

I'm (desperately) try to install Ubuntu 18.04 64 bit (mini.iso) but I fail in each and every attempt. This is due to the 32 bit BIOS and 64 bit CPU which seems to confuse the installer. Until now, I only was able to install a 32 bit Ubuntu 16.04 but I'd like to "upgrade" to a 64 bit base. I have a Mac Min A1176 and tried following:


1) when booting off "ubuntu-14.04.5-server-amd64+mac.iso" on a CD (hoping to so upgrade to 16.04 and 18.04), I get the message: " This kernel requires a x86-64 CPU, but only detected an i686 CPU. Unable to boot - please use a kernel appropriate for your CPU."


2) when using the ISO's from here: https://mattgadient.com/2016/07/11/l...e-2006-models/ (or creating a patched one myself with the .c program), same problem.


3) I'm not able to create either a bootable USB - not visible - in the bootmenu so I'm burning quite some CD's here (no RW). I have no longer a MACOSX install to create such bootable USB stick.


Anyone that can help me with a guide or procedure how to get Ubuntu (mini or server) installed on this MacMini?


Thanks!!