After not d-u_ing for about two weeks I today run d-u, and a new version of grup-pc was installed. I let it install on all physical disks, but not in partition. Now all entries are wrong. There are effects which I do not understand yet (systems ***seem*** to boot with fstabs of other systems) and I do not understand what has happened.
Currently I have no time for further investigation but I wanted to give a heads-up in case the problem is really the new package and not something going wrong due to some stupid grub config here on my system.
Completly my fault. Shouldn't have installed grub-pc while my experimental system was booted. So please move away this thread.
Then I close the thread.