Comment # 17 on bug 965503 from Roman Bysh

Looks like it is working very well.

Results

grub2-mkconfig -o /boot/grub2/grub.cfg
Generating grub configuration file ...
Found theme: /boot/grub2/themes/openSUSE/theme.txt
Found linux image: /boot/vmlinuz-4.4.49-16-default
Found initrd image: /boot/initrd-4.4.49-16-default
Found linux image: /boot/vmlinuz-4.4.46-11-default
Found initrd image: /boot/initrd-4.4.46-11-default
Found openSUSE Tumbleweed on /dev/sdd1
Found openSUSE Tumbleweed on /dev/sdd1
done