|Thanks, you are being very hel[full.
Hope you are not spend too much time on this problem.
But I do appreciate the help.
you could try installing virtualbox or VmWare, and install Debian as a guest OS. Guest OS's run only very slightly slower
I had a very bad experience "upgrading" to Ubuntu 18 , so I do prefer not to mess with my OS.
If I do the above will be be easy to switch between Ubuntu / Debian?
Of course I may have an issue re-installing Eclipse, especially moving current stuff over...