Same problem here! https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1498049
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1497790 Title: Error trying to install ubuntu side by side with windows 8.1 in efi mode. Installer crashes after signaling an error in installing grub- efi-amd64-signed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1497790/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs