These discs worked fairly well for a while, erasing and writing to them with no problem. However, after about 20 cycles they fail completely. I now understand that rewritable discs have a finite lifespan, but it's ridiculously short compared to other brands. As other people have pointed out, once they are "dead" they lock up your system. I have 2 of them died on me the same day. Terrible product in the long run. It's a shame considering they actually worked well initially.
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