Hi Everyone, I've got a few questions regarding DVD-RW. My ultimate goal is to burn a .iso disk image I have of Windows 7 to a DVD, so I can install it. I'm hoping to use a DVD-RW. I tried burning it straight to the disk, but the burn immediately stopped, and said something like "Medium disk error" or something. I mentioned it to my dad, and he said you have to format DVD-RW's before you burn to them. Is this true? I might see if I can buy a DVD drive cleaner soon, but any other ideas are welcome. Anyways, now when I put the DVD in my computer, it spits it back out, so I can't seem to reformat it. It would be a shame to lose a perfectly good DVD-RW, so does anyone have any tips on how I can reformat this DVD? Finally, if I want to use this DVD-RW to install Windows 7, will I have to format it NTFS? If so, is it possible to do this on a mac? Can anyone point me to some software that will do this? Pre-Thanks for any help.