I encountered this issue also. I downloaded ubuntu-17.10.1-desktop- amd64.iso and created USB disk and tried to install Ubuntu using it. I did not specify anything, just pressing <enter> and selecting whatever is offered by default. It should not end like this.
** Changed in: ubiquity (Ubuntu) Status: Invalid => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1735910 Title: Grub installation failure To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1735910/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs