Strane UUID problem

[Heinz Diehl]

Hi,

F21, fully updated, no longer boots cleanly. After to tries, I found the
culprit:

suddenly, the physical device (/dev/sda) has got a UUID, and it's the same as
the one /home has. So no wonder that /home can't be mounted. I have not the
slightest clue what could have given /dev/sda a UUID.

So how to remove it?

Thanks,
Heinz.