I've got a new Retina Display Macbook pro and liked the idea of not having a very big SSD and so, I only have 250gigs of space. I was thinking about downloading one game at a time, playing and then deleting it but that didn't seem to be what I want as the games are huge to download.
Now though I have a USB 3 external hard drive and am wondering if it is possible to move all the game files over to the hard drive while leaving the steam app on my computer. Essentially so that if I open Steam up without the hard drive connected I have to reinstall all the games. Another option would be to install the entire Steam app on the external drive.
So, how do I do this? I've heard about copying over the game files from Application support and using a symlink but I'm not sure how to do that. Any have a tried and true method for Mountain Lion?