I should also mention that I run two instances of IMGBurn at once. I decided to do a read to image and verify with it and it worked fine as well. Tho' just a few minutes ago, I needed to get a file from an old backup from 2010 on a dual-layer DVD and it read fine. I have no intention of reading or writing to DVD or CD so I didn't bother testing with them. I've only used BD-R discs and read from BD-R of 25GB capacities. I just don't know how to use it, I guess. I've tried VSO Inspector, but I can't find anything wrong. I suspect that the reading range of the laser's movements is short of the Power Calibration Area which likely can only be accessed when writing. I've also tried to see if the head moves by doing reads to image, then verify, and it works. Those hubs are a few months old now so I doubt the problem is with them. The ends of the Y-cable are plugged into one port in each of the two hubs, and I've interchanged that to same hub for either, and a mix of both to the same effectiveness and now error. My PC only has 2 USB3 ports and now has a 7-port powered USB3 hub plugged in each. In the past, I've connected it reliably with the ends in dual USB3 ports, dual USB2 ports, and a mix of the two. I've read from ages ago that setting the buffer in IMGBurn above 500MB causes problems, so ever since, I've set it to less than that. I've used the writer in it's slanted vertical position since I bought it, but laying it flat doesn't help. I've tried resetting to defaults, a bit of light cleaning with no solvent, just microfibre cloth, and not touching the lens. That device buffer failure to fill is an error I've never had before when drives failed. This leads me to believe that it might be solved somehow with software.
The test mode performs as it usually does, just that it doesn't write. When I do a real write however, it doesn't fill up the device buffer at all.
The really bizarre part of this is that when I do a test, it works. I figured it was just a bad batch, but now, the coasters are at 100% with the new ones I've gotten and used so far. The current problem occurs even when I try lower speeds. The media is Daxon-R 4X-000 usually reliable by 90-95% at max speed of 4x. Whenever I do a burn, it writes just a bit and starts off at 200kb/s then rapidly goes to zero, but the write speed displayed never goes above zero, then it all ends with an error. Then quite suddenly, this started to happen. Previous to this problem beginning the other day, all settings used, and media used worked fine. The writer is an Asus 06D2X-U with the latest firmware I could find, D501.
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