Not a bug, but a misunderstanding/knowledge on your side. https://www.lifewire.com/ultimate-windows-8-1-ubuntu-dual-boot-guide-2200654
** Changed in: ubiquity (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1768808 Title: failed to install grub-install!! My PC is left unable to boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1768808/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs