Comment # 18 on bug 978284 from Freek de Kruijf

Created attachment 677461 [details]
gziped file /var/log/YaST2/y2log when running yast2 bootloader on Leap 42.1

After running this module on Leap 42.1 this module does not detect the
partition with the Tumbleweed system as a bootable system. At least this system
does not appear in the grub2 menu.
I noticed that in the folder /boot on the root partition of Tumbleweed files
like initrd and vmlinuz and alike are missing.
Will retry the upgrade of Tumbleweed in English choosing /boot as the boot
location.