I have an iMac (mid 2011) and I am thinking of purchasing a MacMini. I know with this model I can use the IMac screen to display the Mac Mini content using a specific connecting cable. My question is if I do this connection can I still use the IMac to view its files/photos I have accumulated etc. (to save space which I would lose if I transferred them across to the Mini). I appreciate the two machines could not be active at the same time. So basically my question is can I use the screen for the two computers.Would I have to remove the connecting cable to do this swap or maybe not switching on the MacMini and only switching on the Mac? I hope this is understandable to readers. Thanks for opinions.