Comment # 9 on bug 960074 from Matthias Sch�nemann

...
> Just do this
>   zypper ref
>   zypper up os-prober
>   grub2-mkconfig -o /boot/grub2/grub2.cfg
> 
> If 'zypper up os-prober' doesn't list the update candidates, probably you've
> installed os-prober from other vendors, try this instead.
>   zypper in -r repo-update -f os-rpober
> 
> Thanks.

Great. Thanks for posting these sequence of commands (including the
alternative, though I think I don't need _that_ one as shown in the list of the
repos I use).

In accordance with your next post I will wait until you give the all clear ;-).