Wolfgang Solfrank <ws@tools.de> writes:
> 
> Offering an option to the user to overwrite the mbr code probably does
> make the most sense here.

Actually, if we find that there is only one BIOS partition on the
machine that takes up the whole disk, it would make sense to install
the NetBSD mbr code whether there is an existing one there or not.
Of course, a radio button display would work too.