I'm going to be upgrading from vista home premium to windows 7 next week. I'm in a command line class for Windows/Linux so I also need to set up a dual boot for Linux. My main question is, should I wait until after I upgrade to set up the dual boot? I'm getting the windows 7 upgrade from a teacher and I asked him but he didn't know whether installing it would overwrite both OSs or just vista. It would be very helpful if someone could tell me whether its safe to install Linux now or if installing windows 7 will wipe it from my computer with vista, making me have to reinstall Linux again. Thanks in advance to anyone who can help. BTW, I'm going to install windows 7 from an ISO on a usb drive. Not sure if it makes a difference, just trying to provide as much info as i can so anyone who wants to help me has all the information.