Firmware updates may fix this, but I don't think there are any firmware updates to it currently available. Since it did these same tests with the same results on 2 different copies of that ASUS drive, the problem is with the drive. Same story! Wrote to the disc but rendered it destroyed. Then I gave it a Verbatim Mitsubishi BD-RE DL and wrote an ISO to it that spanned the 2 layers. It wrote files to it, but, once again, it rendered the disc unreadable afterwards and could not be salvaged. Then I gave it a Memorex Ritek BD-RE SL formatted as a giant floppy. It couldn't be reformatted for salvaging because the disc was not even recognized in any drive as a disc to format. It wrote to it but completely destroyed the disc, even though it was new. That model doesn't seem to write rewritable discs correctly.

I'd have sent the other one back but I had already sent in the UPC code from the box for a rebate, so I couldn't. It did the same thing on both models, one of which went back to. I had two of them, just in case the first one I got was a fluke and was bad. Unfortunately, that ASUS drive you mention is junk. (LONG story as to why I still use an LG drive even though I don't recommend them.) Now, if I get 2 more failures pretty soon after each other, I'll declare the LG needs replacing. Before declaring there was a problem, I tried burning it again and it succeeded on that 2nd try. Last night, had a failed DVD+R DL in my LG BD burner. But, I generally can't say a problem is repeatable and therefore there without running the 3 media test. However, with your XL discs costing $20 a pop, my method is not cheap. The way I test, I perform a test with 3 media in a row before declaring a problem. Again, one of those one in a thousand failures.

The cause was there was a crack in disc that apparently came out of the factory that way. They rarely fail, like 1 in a thousand failures. For instance, the other day, I had a rare failure on a Verbatim BD-R SL. Usually, though, these failures are the fault of a random disc that just happened to be bad. However, you can get random failures that just happen.

My results are generally not hit or miss. The other Dell poster's slim and full height drives were DVD burners.

Pioneer bdr xd05b review