I have NO idea what's going on here. Unfortunately, the ND-3500 is the ONLY DVD drive I own, and I don't have anyone localy that can do K-probes for me, so that's just not an option.
The only media I have at present, and/or WILL have for a good while, is Ritek Ridata R03, and a couple Ritek Ridata G04's. I have tried 2.16, 2.17, and 2.18 firmwares. (No offence, but I'll not use any hacks until I am sure the drive is functioning properly.)
I'm writing 4.3 or so gigs in about 10 minutes at 8x, so that checks out, but I'm not entirely sure these scans with Nero CD/DVD Speed are any good. (A few are obviously bad.)
Transfer rate tests like these I suspect are acceptable, and have concluded may very well be normal for the P-CAV write stratagy......
Burned at 4x with 2.16
(The scan was done after I flashed the drive to 2.17, but as I stated, this disk was written with 2.16@4x)
Here's a transfer rate test done on a disk that was burned at 8x with FW 2.17:
Now, here's where things start getting strange. I made a test disk with Nero CD/DVD Speed, and the original test reports it as Z-CLV write stratagy on an R03 as seen here:
But I did another transfer test on the same disk after letting it sit around on my desktop for a few days as I was trying to see how durable the media is, and it reported the write stratagy as P-CAV, as seen here! :
What the heck is going on? I'm BAFFLED! Also, many of the disks are testing out VERY poorly, irreguardles of whether they were written at 4x with the 2.16 FW, or at 8X with 2.17. I've sence loaded the European 2.18 firmware, and written a two disks with that, and the results don't look very encouraging either. Take a look.
First burn at 8x with 2.18 doesn't look too bad I guess:
But this second burn is junk:
I don't think that this is a media issue, because the G04 disk I wrote doesn't look much better:
I have several x-fer rate tests that look VERY UGLY as well, not just the couple I posted here, but didn't want it to take forever for the thread to load, so I tried to pick the most relevant tests-charts. If there's more anyone would like to see, please just let me know adn I'll post them as just links if that's alright.
DMA is set properly in both Bios adn Windows XP Pro's device manager, drive is alone on the secondary controller as master. One think I've noted is that DVDInfoPro says that there's no windows ASPI loaded, and it's not currently set to use any. I've wondered if perhaps that's the problem, or no. Any help would be VERY much appriciated!