Round-To-Its

I decided to try burning DVD+R DL disks and made a few round-to-its (AKA coasters) before giving up. I tried two different burning programs and both failed at around the 80% mark. I assumed it that it would just work and nothing I've read suggests otherwise. I suspect a drive problem. Perhaps updating the drive's firmware might help but that requires Windows. Grrr. Dumb hardware manufacturers.