A bios_grub partition is used for booting in bios mode on a GPT partitioned disk. You appear to be booting in EFI mode, in which case you need a 100 MB fat32 EFI system partition mounted in /boot/grub/efi. Also do not use ext2 -- use ext4 instead.
** Changed in: ubiquity (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/1209158 Title: GRUB goes into an infinite loop - perhaps. Does not complete the boot process To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1209158/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs