I'm trying to find a way to get rid of my installation DVDs. I have one for Mac Snow Leopard, Ubuntu, and Windows 7 that I carry around and also for Vista and XP at home. Also, I plan on having one of Lion if theres an easy way to do that once it's out. My question is how can I get rid of these and use a large flash drive instead? I don't really want a bootable OS exactly, I just want to be able to plug in a flash drive to a windows computer or a mac and then install an OS on a partition. Is there any way I can easily do this? Thanks.