I have in my PC an unbranded (I believe it's a Lite-on clone) DVD smart read/writer, which is supposed to cope with + & - disks (cd & dvd), DVD-RAM disks, and Dual Layer DVD's. This has indeed been the case for some two years now without a problem (barring the occasional - rare - duff disk).
What's your problem then I hear you ask. Well, I recently invested in 400 "Elite Ultra Premium 1-8x DVD+R DL" disks only to find that the writer won't recognise them. (Neither will my Panasonic DVD Digi-box/Recorder, but the Sony HDD/Digibox/Recorder will!).
I had previously been using some unbranded DL disks (bar-code 5 060103 883745) which I bought at a Computer Fair and they are fine in all equipment.
Am I in need of new firm-ware: should I get a new DVD ROM for the PC, or just throw the disks away as a heap of........! I cannot find anything about the make anywhere, though I suspect they're Ritek under a different name.
Any assistance would be useful.