Comment # 7 on bug 1017778 from Jiri Srain

(In reply to Richard Bos from comment #6)
> From #c3:
> > Perhaps we should prevent installing generic code to MBR if GRUB is not installed 
> > on the first (according to the order) disk?
> 
> If installing the MBR does not make sense, it shouldn't be done.
> 

Well, with booting, there are too many unknowns, which cannot be detected. When
booting the installation from CD/USB, the boot order is different than the one
when you boot after installation. And the installer cannot know how you set
your BIOS for next boot.

As Josef pointed out, what I thought that makes no sense can make sense at the
end - therefore we should be careful. MD arrays make quite a change.