Comment # 3 on bug 999818 from Josef Reidinger

ah, my fault, it is not only for powerpc.

Michael - can you please check why it failed? Code to detect when this
removable and no-nvram to use is at 

https://github.com/yast/yast-bootloader/blob/master/src/lib/bootloader/grub_install.rb#L48

maybe we need to limit it even more? or detection is wrong and there is better
way to recognize it.