Temporarily swapping drives in duo

Great, thanks for the reply, yeah I know the methodology is a bit odd, I'm limited on resources at the moment only having a laptop and the duo. I want to upgrade to the duo v2 and then sell the duo with these two Sata drives In it that I happen to have knocking around from an old NAS drive that the psu packed up on a few years back. Thing is I can't remember whether the disks were ok and they have been sitting around in a box for a year or so...so just wanted to make sure all was well before embarking on the migration. The difficulty might come in trying to remove the partitions so I guess a hdd caddy from eBay will be my friend!