In this tutorial, we learn how to verify your ISO images before burning them. First, download the MD5 or SHA1 sum files. These will be able to verify your files are successful before you burn them to a CD or DVD. You can look at the different files to see what is inside them by typing in the name of the file and wait to see if it says it's okay. If it has something wrong with it, it will tell you something is wrong, then you can avoid downloading this and burning it for a CD or DVD. This is a great tool to help you avoid downloading and burning corrupted files!