moving /boot to another disk/partition

My /boot is now not on a separate partition, but in a directory of / partition. I would like to have /boot as a separate partition, and to make it without reinstalling the whole system. Since my first disk already has max number of primary partitions, I am thinking of creating a new partition on my second HDD, copying somehow my /boot content there and then switch to use the new one for booting my SuSE 9.1... Is it possible? If yes, then my question is how to make it in a safe way? TIA cikasole