You don't really need the separate /boot, and note what we said about booting the uefi device.

If all goes well, you shouldn't need to run boot-repair at all, it should work. Additional step might be needed to add ubuntu to the uefi loader, but if that is the case I think boot-repair can't help anyway since it can't add that. The only choice is to enter bios with Del and look for that uefi boot menu/manager or what ever it might be called.