nero know you are burning illegalz discz 
Hmhmhmh. I wouldn't think so. I've used this same nero to write tinyXP 10 and 11, to
DVD and CD, respectively.
I didn't see any option for 'UDF' in Nero.
I just tried ImgBurn. Errored out, too. I guess the discs can only be written at 1x .......(

??)......so I tried that in Nero, and same problem. These discs are maybe only made for video? They're DVD-RW, and say 4.7gb 2 hours video.