IMHO, we found the reason. Because of new snap packages there were a lot of existing loop devices when the installer created loop devices for installing.
So the loop device for installing is /dev/loop10 which is a problem for grub. The range of supported loop devices is from /dev/loop0 to /dev/loop9. Either it is necessary to change the selection /dev/loop[0-9] in /etc/grub.d/10_linux from package grub-common (maybe also other files) /etc/grub.d/10_lupin from package lupin-support /usr/share/lupin-support/grub-mkimage from package lupin-support or to change the mount sequence or the loop device names for snap packages. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1762034 Title: Installer crashes at installing grub To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1762034/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
