I have a 50-pack of CD-RWs that I have data on that I no longer need. But when I try to erase them, they don't erase completely. Sometimes it looks like it's gone but, when I try to write new data on it, the stuff I wanted to erase is still there...and also errors. Are these CDs no longer usable?
3770K | ASUS STRIX GTX 1080 | DDR3-1600 16GB | CORSAIR 650D | CORSAIR HX 850W | CORSAIR H100 | SOUND BLASTER Z | ASROCK EXTREME4 GEN3