How to copy a DVD with a Cyclic Redundancy Check

DVDs may receive Cyclic Redundancy Check errors. When this happens, some of the files on the DVD will not be accessible. Errors are caused by smudges that a laser cannot be read through. This can be corrected by cleaning the underside of the disc. Once this is completed, you will be using the DVD flawlessly within minutes. Things You’ll Need
Show More Instructions
Turn the DVD upside down and place it on a flat surface.


Moisten a cloth with alcohol.

Clean from the middle of the DVD to the outside. Continue until the DVD has completely wiped down.

Dry the DVD for a few minutes.

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