I run OS X and Windows 7 on my 2010 iMac 27". I also have a new MBP 15". Here is my dilemma. I am aware that the iMac can act as an external display for my MBP with Target Display Mode. I need to run Windows 7 on my iMac while utilization the screen as an external display. Is there a way I can set this up to function like a regular monitor. I need to be able to. 1. Use the iMac itself in OS X partition and Win7 partition, swapping between the two. Should I run Win7 off an external to do this and swap between screens? 2. Swap from my iMac screen to my MBP screen through TDM. What's the best way to do this?