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Originally Posted by BillK
Jochen, I used Nero Disc Speed, per your recommendation. I think I did it right, but I don't understand my results. I got a couple of hundred "C2" errors and no "C1" errors. I cannot find an explanation of what these two types of errors mean. Can you interpret these results for me?
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I googled "cd c1 and c2 errors" and the top of the list is
Explaining Common CD Errors
(Maybe I should sell training courses "How to Google?")
This website states:
C1 Errors.
C1 Errors refer to the block error rate (BLER), which consists of bit errors at the lowest level. BLER is always expressed in errors per second. All CDs and CDRs contain C1 errors. They are a normal result of the write process. However, the maximum BLER rate for a quality recording is an average of 220 errors per second based on 10 second samples.
C2 Errors.
C2 Errors refer to bytes in a frame (24 bytes per frame, 98 frames per block) and is an indication of a CD player's attempt to use error correction to recover lost data. C2 errors can be serious. A CD player may correct them, then again, it may not.
C2 errors are usually an indication of poor media quality, or a CD writer's failure to produce a quality burn (see conclusion).
My personal experience is that I would accept CDs with around 100 or less C2 errors.
Experiment burning at different speeds, and see what difference it makes to the error rates. Tip: try 1x and report what you find. You may be surprised!