I just reformatted my computer yesterday. But Before that I needed to backup all the stuff I had on my computer. I had around 20 gigs worth of Music, Media, Documents, Apps and so forth. I wasn't quite sure on how to back it up on DVD's so I googled and someone said make an Iso out of your data and then burn it to a dvd. So I did just that. I used MagicISO to make the ISO's with my files and then I burned the ISO's to DVD. Then today I tried to extract the files and such but all the DVD's are showing up as blanks. All of them. I tried MagicISO, ISO Buster, and even DVD Decrypter to try and get my data. Is there something I did wrong. Is all my data gone. Please help.