The data integrity of compact discs can be measured using surface error scanning, which can measure the rates of different types of data errors, known as C1, C2, CU and extended (finer-grain) error measurements known as E11, E12, E21, E22, E31 and E32, of which higher rates indicate a possibly damaged or unclean data surface, low media quality, deteriorating media and recordable media written to by a malfunctioning CD writer.
The data integrity of compact discs can be measured using surface error scanning which can measure the rates of different types of data errors known as C1 C2 CU and extended (finer-grain) error measurements known as E11 E12 E21 E22 E31 and E32 of which higher rates indicate a possibly damaged or unclean data surface low media quality deteriorating media and recordable media written to by a malfunctioning CD writer