Comment # 14 on bug 915098 from Olaf Hering

(In reply to Kenneth Wimer from comment #12)
> Can't YaST just check to see if there is a bootloader installed at the given
> location and if not, reinstall it?

The detection would take more time than to actually write the few bytes of
first-stage bootloader unconditionally.

In the end its a matter of deciding what yast bootloader is supposed to do. IMO
it should do everything required to get the thing booting.

One that works its time to optimize, based on profile data. And I doubt such
optimizing would need any yast2 changes.