I hope you can help me with an answer.
I run Mac OSX 10.9.5 on my late macbook and want to switch to Ubuntu - once I am more familiar with it.
I downloaded a live USB image of Kubuntu19.10 and created an iso on one USB stick.
I put in another USB stick and installed the Kubuntu 19.10 on that non-iso stick according to the instructions I found using ubuntu-prepare -installation. I used the KDE partition manager. First I created a 500mb Fat32 partition, then a 116 GB ext4 partition and a 4 GB swap partition.
I then formatted the fat32, a 48 GB and a68 GB home partition.
Then I was hoping to boot into the Kubuntu system using the Mac option -key on bootup - which didn't happen at all.
I then installed the rEFInd utility and now at least I am able to boot my Mac OSX again.
But no chance to boot into Kubuntu - although two icons show up. Maybe a USB stick can't be configured to work as a second hard disk?