Sorry I don’t have any help for you but for what it’s worth I had a DRU500A as well as the 540A or whatever. The next upgrade and had problems with it in both DVDA 1 and 2. Finally trashed them and got a decent burner. Went with one of those Mad Dog’s and now I got the new HP Light Scribe.
Problem I found with Sony was they’re really particular about what kind of media you can burn. I’m talking about brands. Sony has a list of “approved” media brands on their web site. Most of which I couldn’t find at the time. Their tech support wouldn’t even help me unless I had one of ‘their’ approved brands to run the tests.
So you’re not alone in having problems with those burners.
Allen
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