You attempted to install grub to /dev/sda, but it appears that this disk has no partition table and is instead a whole disk fat32 filesystem. You will need to either partition this disk, or install grub to another disk and make sure your bios is set to boot from that disk.
** Changed in: grub-installer (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1654667 Title: ? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1654667/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs