I've seen low to medium rates of C1 errors on different brands of discs I've burned in the past with few if any C2 errors. Nero DVD-CD speed was used for the tests. The upward green line is good on all of them & the discs are fine for both data & audio. I just wonder if I should concern myself with C1 errors (as I do C2 errors) or just forget about them. A lot of C2 errors (or downward dips going too far) & I reject the disc!
No errors of any kind would be best but it's impossible to make a recording without some C1 errors, it's C2 errors that do most of the harm. This doesn't mean that you can get away with a large number of C1 errors. To avoid these use quality media and reduce the speed of your burn. _X_X_X_X_X_[small] Once you eliminate the impossible, whatever remains, no matter how improbable, must be the truth." Sherlock Holmes (by Sir Arthur Conan Doyle, 1859-1930)[/small]
"No errors of any kind would be best but it's impossible to make a recording without some C1 errors, it's C2 errors that do most of the harm. This doesn't mean that you can get away with a large number of C1 errors. To avoid these use quality media and reduce the speed of your burn." I do both. Good quality media & slower burns. Even though I've got a 52x CDRW drive I seldom go over 32x for data & audio gets burned at 12 or 16x. But 99$ of the time I can go faster if I wanted to up to 52x without problems just that 40x & below give less C1 errors. I don't go faster than what the media is rated for either....
"Don't go as fast as its rated for and enjoy quality backups, that's all you can hope for. Good luck!" Yes I agree (by experience & testing burned CDR's) 100%!