I found a lot of answers in the internet to the question "Can I put my HDD in another console?" What happens is that the other console will try to format the HDD.
What I want to do is a different thing. My cousin is a spoiled brat and he is coming to my place for some days. I want to remove my 80GB HDD from my PS3 SuperSlim, so he doesn't screw my data. So the plan is to let him play with the 12GB internal flash memory.
Well, later I want to place my HDD again, so I have access to all my saves and such. Will the console accept back the HDD again? Or will she try to format it?