What does the term “Cyclical Redundancy Check” mean?
I don’t pretend to understand the math behind all this, but I have a fair idea how it works. Cyclic redundancy check (CRC) errors indicated that the file producing the error has failed an integrity check. When a file is copied from one location to another, it’s copied in small blocks. Each block is assigned a CRC checksum — a code that is based on the data in the block, and should be reproducible. As the data block reaches the destination, it is checksummed again. Blocks that produce the same checksum are assumed to be intact. Blocks that produce a different checksum (code) are assumed to have been altered, either deliberately (as in hacking, which doesn’t apply to you) or perhaps through some corruption in the data source. The possible sources of the problem vary. You could simply have a dirty disc…try cleaning it. Your drive, cables or connections may be faulty — try reading the same files in another drive. There may have been errors during the backup or burn problems that produc
