I've also struggled with this problem (package "grub-efi-amd64-signed" refusing to configure) during system upgrade 16.04 to 16.10, and finally managed to overcome it:
sudo ln -sf /usr/lib/grub/x86_64-efi /usr/lib/grub/i386-pc sudo ln -sf /boot/grub/x86_64-efi /boot/grub/i386-pc sudo mv /boot/efi /boot/EFI sudo dpkg --configure grub-efi-amd64-signed I hope this might be helpful... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1571925 Title: grub-install: error: cannot find EFI directory. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2-signed/+bug/1571925/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs