Comment # 56 on bug 949796 from Norbert X

Got to this issue after changing rootfs device connection.
System was installed on QEMU-KVM, then booted on physical hardware.
So if I start "Boot Loader" YaST2 module I get error window with text:
"Error
Internal error. Please report a bug report with logs.
Details: Unknown udev device /dev/disk/by-id/ata-QEMU_HARDDISK_QM00001-part1
Caller: /usr/share/YaST2/lib/bootloader/device_mapping.rb:42 in
`to_kernel_device'
"
I need to update bootloader manually with "grub2-mkconfig -o
/boot/grub2/grub.cfg".

This problem is openSUSE-specific. Ubuntu, for example, does not have this
problem.