I have a rather strange problem. My DVD burner, which is Optiarc AD-5170A, doesn't seem to be able to read any of my Traxdata DVD-R's (16x) even though it detects the ones that are blank and is able to burn them.
It reads all other DVD's that I have, including Octron CD+RW, Imation CD+R, various magazine DVDs etc. I suspected that perhaps any laser defect that might be causing it became too sensitive to the color of the Traxdata DVD's (purple), but Imation has the same color yet can be read properly.
What's more, it was able to read them all not long ago and neither of these DVD's were burned more than a few months ago. They also work properly when I read them with another DVD reader. So degradation or media corruption of any sort is definitely out of the question.
All things considered it does seem like the burner's laser is getting defective. I am just puzzled that it is ONLY Traxdata DVD-R's which it wont read. How can a defect affect only a single type of DVD?? Why would this happen?
Anyway, most of these DVD's I burned at slower. They contain a number of video files. After burning I checked that I can watch them before storing them. I burned them so I can free some space on my HD and hopefully store them for viewing any time I want. (It is only since my visit to this forum that I learned traxdata's aren't actually good for this sort of use, and this is after I just bought a spindle of 25 of them ).
An interesting thing I discovered about the few of these DVDs that I tested, trying to read them with my (possibly defective) burner is that the dvd+rw-tools mediainfo command states the following:
READ TRACK INFORMATION[#1]:
Track State: complete,damaged
I wonder what "damaged" here refers to. These are the disks which I burned fine some months ago or so, the disks it read fine before and now suddenly wont.
Could it be that the burns were not good all along and now that the burner is crapping out (or whatever is happening) it is failing to read disks which have "damaged" track state? I mean, as the laser is getting defective it is getting more sensitive to burn errors?
If this is a sign that I should replace my burner I most certainly will. But I just wish to learn more about what happened here so I can know what NOT to do in the future. One thing I know is that I'll never buy Traxdata again. :S