Thanks Brian for the info but sorry no go. I realize I made a mistake to reply, my reply was on #1893930 Below I have copied my reply :
After first trying to upgrade with : do-release-upgrade -p the result was : An unresolvable problem occurred while calculating the upgrade. This was likely caused by: * Unofficial software packages not provided by Ubuntu I then unticked all " PPA 's " The result was : Could not determine the upgrade An unresolvable problem occurred while calculating the upgrade. Can't the upgrader indicate [ Which "Unofficial" software is a problem ? ] My next option is to get a fourth hard drive installed on the PC and install 20.04.lts there. [ I have drive 1 = Win XP , drive 2 = Win 7 , drive 3 = Ubuntu 18.04 LTS ] Thanks Klaus -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1908279 Title: Unable to upgrade from 18.04LTS to 20.04LTS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1908279/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs