DVD Updrade: Error saving bootloader config: drive hd0 is defined multiple times in the device map

Upgrade from 42.2 using DVD
Stopped near the end of the upgrade during:
*Saving bootloader configuration…

Execution of command “”/usr/sbin/grub2-install", “–target=i386-pc”, “-force”, “-skip-fs-probe”, “/dev/sda2”]] failed.
Exit code: 1
Error output: Installing for i386-pc platform.
/usr/sbin/grub2-install: error: the drive hd0 is defined multiple times in the device map /boot//grub2/device.map.

Photo:
http://www.cjoint.com/data/GGBm7TUc26o_suse-42-3-PIP-bootloader-error-c.JPG

Clicked OK and it continued and finished.
Rebooted OK. Nothing apparently amiss.

Anything I should investigate and fix?

The same thing happened to Thumbleweed.
But everything is OK