Now I have tried to follow the process of the changes in initrd caused by dracut. I copied the 3 actual version of initrd-4.2.1.-1-desktop. So I got 3 versions of initrd-4.2.1-1-desktop. First originally installed from tumbleweed. (Booting normally)(attachment: lsinitrd 1). Second after installation of my own kernel 4.1.10-2a-desktop. (Both booting normally)(attachment: lsinitrd 2) Third after upgrading to tumbleweed 20151022-1.2. (only my own kernel can boot)(attachment: lsinitrd 3) After having compared them the most important thing is for me, that raid0.ko is lost in version 3. Other md-things are installed instead.