It is possible, I'd recommend replaceing the internal HD and also adding a SSD. OWC has a kit for adding media via a data doubler, here is a videoHi
I have an imac 2009 EMC 2309 and my harddrive has just broken. Now i would like to insert a SSD harddisk. Is that possible? If yes, which one (model & brand) and do you have some sort of guide?