Actually given that you believe that bug 1864791 is sort of caused by this first occurring, let's try to track this one down further.
The fail log would be especially helpful because there's some new changes to how logging is done. It would be best if you can it with `sudo -E calamares -d` as that will be particularly verbose. I will also add contrary to my previous message, that *THIS* might actually be the correct upstream issue and it seems it is somehow related to btrfs necessarily adding /home: https://github.com/calamares/calamares/issues/1222 ** Bug watch added: Calamares Issues #1222 https://github.com/calamares/calamares/issues/1222 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1864787 Title: Lubuntu failed install "sfdisk --force --append /dev/sda" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/calamares/+bug/1864787/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
