>What you need is to defragment your hard disc. >You need gigabytes of contiguous space to encode and burn. The lack of >contiguous space causes the buffer underrun. That is why a small >project works, indicating that in general you are ok. This is one reason I thought using an external drive would be better (I delete everything off the drive when done with one DVD and then start on another). I'm just confused about hard drive space needed on the main boot drive. Is there no way to use the exterbnal for everything? I've heard that I still need 10G on the main drive.