I didsome tests with an old TDK CD-R disc from 2000, and scanned it for C1 using the Benq1640:
Well, many C1, but no C2 - I decided to do some "modding", I hope this cannot harm my drive, but the feltpen lines are water resistant:
After that, look what my scan looks like.
This shows two things:
- the Benq1640 definitely can produce C2 Error Information
- the Benq1640 can read the disc although there are those feltpen-marks on the disc - how is that possible at all? I tried copying data via Windows explorer, it is all readable! Can somebody explain that to me please how that is possible?