Hi guys, I was wondering if there is any way to dual boot Snow Leopard and Lion. The reason I ask is that I cant upgrade from Snow Leopard until I'm sure all of my software works on it, but I need Lion for the OpenGL 3.2 implementation. Dual booting seems like the logical solution since my production programs can stay in Snow Leopard while XCode stays in Lion. To further complicate things the Lion drive would need to be on an external since all of the drives inside my computer are roughly 3/4 full and can't be moved as their contents are essential to my workflow. So basically my question is is can I dual boot snow leopard and lion while having lion on an external drive? EDIT: If anyone has a tutorial they know of it would be most helpful For some reason I can't find anything online about it thats relevant to current OSs.