ok, I have no idea if this can be to any help but first time the problem started systemd also did a start job for my second hardisk on every boot, four start jobs, one for each partition with ntfs file system and then finally the one for network manager. As this with hard disks have happen before when uuid has changed I checked fstab but uuid was the same and right so to get rid of that I put a # in front of this lines in fstab, (they are anyway not supposed to be mounted when booted in to siduction) then there was only the start job for network manager left.