Hi Mikael and Brad, and thanks for the information. i appreciate this because i learned a lot. and you are right the internet is full of wrong things and yes i react a bit late because the problem is now, but as an excuse, i have not that time to study such a big subject like raid with all its interessting parts like the hardware, speed, possibilities, e.g. but i learned a lot by solve errors like this ;) and appreciate people like you at mailinglists and forums who helped. ok now its become difficult for me to follow because of my engl. understanding. what i understand out of your answers is: - force is not at all a problem - in the most cases do not use --create --assume-clean, else you know why --> but what is the problem with this, please explain In my case the superblock seems to be on all disks persistant, i use the same version and chunk-size. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html