Evening all (u.k time zone!), I'm new to this forum and not a great expert but am wondering if it is possible to run tiger on my 2007 imac as well as 10.6.1 which is the main operating system? We have just got rid of our g4 'bubble' imac after it gave up the ghost and now i am left with a proper retail tiger install cd that we never managed to install on the old imac (it was running 10.3.9 and as a second computer i was going to upgrade it) No other reason than curiosity! Bit of fun,Thats all. Rob.