I just re-experienced this using hirsute daily, install on - dell [optiplex] 755 (c2d-e6850, 5gb, amd/ati radeon rv516/x1300/x1550)
I've also marked https://bugs.launchpad.net/ubuntu/+source/calamares/+bug/1914521 a duplicate of this... Note: 1914521 was easier to replicate, as it was a simple (1) FULL DISK install of Xubuntu/Lubuntu, (2) INSTALL ALONGSIDE of Lubuntu (occurred on focal.2 ISO) however; the install was done many times, and that bug only occurred extremely rarely (and on a single box) - dell [optiplex] 755 (c2d-e8300, 8gb, amd/ati radeon rv610/radeon hd2400 pro/xt) which is a similar but different box (later motherboard) -- 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/calamares/+bug/1864787/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs