I am not yet ready to switch definitely to Juno, as several apps needed for my work environment are still missing, but nevertheless, i wanted to create an *.iso of my current E. Juno Os. So i did with my home folder (example code):
mkisofs -o destination-filename.iso /home/username
But…the point is i wanted to create an iso from my whole operating system. The point is to safe my applications and its documents. How to do that?
I looked around for awhile and did not find anything useful to backup my OS. After installing systemback from "https://code.launchpad.net/~nemh" all i got was a waring that pops up all times when i open the "AppCenter":
(i translate from German)
Update download failed This might happen for external installed software-repositories or caused by a corrupt sources.list file
I would be happy if you could help me also with this issue, as the original problem connects both problems…