The bug reporting system guided you to file this bug against the grub package because you have grub1 installed on your system. This is not installed by default, has long been deprecated, and you have installed it without configuring it which is an error. To restore your packaging system to working order, do:
sudo apt purge grub ** Changed in: grub (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1915762 Title: package linux-image-4.4.0-198-generic 4.4.0-198.230 failed to install/upgrade: run-parts: /etc/kernel/postrm.d/zz-update-grub exited with return code 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub/+bug/1915762/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs