If you are booting in UEFI mode, you'll need to create the EFI partition for grub to install correctly. I will convert this bug to a question, as this issue is expected given the description of the bug.
** Changed in: grub-installer (Ubuntu) Status: New => Invalid ** Converted to question: https://answers.launchpad.net/ubuntu/+source/grub-installer/+question/689700 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1870203 Title: Ubuntu 20.04 beta install crashes in grub-install step, maybe UEFI boot related issue To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1870203/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs