For the record...if you have disc read errors, the simple "open system (and disc drive) and clean" worked for me SO FAR. After playing a fun game of 'Will it read the disc THIS time?' for about 15 minutes or so, I opened it up (easy guides online, I suggest making a plastic key from a blank CD case topper, google it.) and cleaned it out with duster.
Read the disc 3/3 times so far, trying not to jynx myself.
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