Troubleshooting Inability to Burn Dual-Layer DVDs

Posted:
in Genius Bar edited January 2014
I have a Sony DRU-820A DVD burner, and which has stopped burning dual-layer DVDs?single-layer DVDs continue to burn successfully. I've tried using both the Finder and Toast 8 (which have both worked previously), but now the burn fails while the drive is filling the cache. I've attached the drive to another computer, and it works fine. I've also tried creating a new account on the computer and burning from it, but that fails, too. The only change I made to my system between when the drive was functioning and now was the installation of the driver for my printer. Unfortunately, I don't know what was installed in order to remove it an determine if that's the issue. However, the same drivers are also installed on the second computer I used to successfully test the DVD burner. I'd appreciate any advice regarding the best way to troubleshoot and resolve this issue. Thanks.
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