So i got ubuntu and i burned the disk image onto a cd-r and when i start my computer i go into the ubuntu screen and i pick a language and then after that when ever i click on something it comes up with a disk error (something like can't boot from disk) and then the computer restarts. I have xp on the hd right now and i have two cd drives the master is a dvd drive and then the other one is a cd drive (used cd drive to burn image). I used infarecorder to make the disk image. I'm wondering why i'm getting a disk error.