[QUOTE=FordMan;2032365]If you consult the specs for the DVR-212 drive here:
You’ll see that it is SUPPOSED TO burn DVD+R dual layer media at 6X CLV. This seems normal, as the DVR-111 series can do that, and the DVR-212 writes single layer media at at 6X CLV.
The issue is that the DVR-212 does not do as it is advertised, instead writing Verbatim MKM-001 dual layer media at Zone-CLV, at 4X for the initial 670 MB, and then 6X for the remainder. If both layers are full, it will also “downshift” to 4X when finishing the second layer.
The problem with this is that it creates banding on the recorded surface, but not just the normal rings as I’m used to seeing. Instead there seems to be about a 300 MB transition period after the switch to 6X where there are what can best be described as “swirls” in the coloration of the dye…sort of like a hurricane viewed from a satellite, and these occur around the entire circumferene in this 300 MB zone. Meanwhile, if I burn at 4X, it is true CLV and the surface is burned with an even appearance with no graduations in the coloring of the dye layers. Because of how it occurs in this zone, I’m assuming there was an issue with the re-calibration of the laser power before burning resumes at 6X. The discs seem to play OK, but I’m concerned about the quality of the burn. This same media burned on my DVR-111 drive burns at a true 6X with perfect results (no banding/color graduations).
Yes, these are made in Singapore with the “original style” artwork on the label side.
I know I can swap strategies with MCSE, but is there a way to actually edit the instructions for the existing MKM-001 entry in the firmware to force the 212 to burn at a true 6X CLV? I know that is possible with other brand DVD writers such as LiteOn, as people have released custom firmware for them to change the location at which speed shifts are made or laser recalibrations are performed. If that isn’t possible on Pioneer drives, is it possible to copy the MCC-004 strategy (which burns at 6X CLV in this drive) to the MCC-001 without disabling the MCC-004 strategy?
It has been extremely frustrating dealing with this issue on a drive that should be at least as capable as my older DVR-111 drives…
I don't care what you burn your dual media at there will always be those "SWIRLS" as you say. This has almost nothing to do with the writing type and speed but has to do with the media being dual layer. When you put 2 layers on top of each other and burn them you are going to get this swirl effect NO MATTER WHAT.