First time user here. My C: has 250gb full. I think the resulting image would be too large (i tried and it said after awhile I don't have enough space). I have a bunch of multimedia of music and movies that I don't wish to backup. How do I backup the operating system and maybe installed applications without pulling all the extra media files with it? I'm assuming that I can just restore this image on a new hard drive if my first HD crashes without reinstalling windows. Is this assumption correct and how long would this take, 10 minutes?