How To Tell The Difference Between A CD And A DVD

How do I tell the difference between a CD and a DVD?

You can flip it over and look at the back and a DVD will have a purple sheen to it and a CD will have like a silvery sheen to it but that's a guideline. It's not a rule of thumb because on the newer DVDs, the double layer DVDs, when you flip them over, you actually have a blue sheen and you may have a silver sheen on some of the types. It depends on how they were manufactured. So, there is no way to effectively differentiate between a DVD or CD other than looking at the labels because typically they will be clearly labeled DVD or CD, especially if you are using them to burn and also the amount of content that is stored on it. A DVD holds approximately ten times the amount of content or more than a CD.