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Old Jul 06, 2002, 05:42 AM
Ferret76 Ferret76 is offline
Join Date: Dec 2001
Location: England
Posts: 88
Default Cyclic Redundancy error

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What is one of these? Can it be fixed? I've tried copying the file with the error from the CD but it keeps saying error. Is there any utility that will help or should I gorget about it?
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Old Jul 06, 2002, 05:53 AM
CHR15 CHR15 is offline
Join Date: Dec 2000
Location: UK
Posts: 1,619

Its a method of error checking a file after its been transmitted. For each file a CRC is generated, when you run the file your own PC also runs the check and both results are compared. If the answers are different then it assumes the file is not complete or corrupt in some way.

The best way around it is to re-download the file.

Heres a more indepth speel about it:

In a nutshell, it is a more robust way of checking for data corruption that can occur anywhere in a transmitted data message. A special algorithm is used that calculates a binary code as a result of arithmetic operations on the data; this is called a cyclic redundancy code (also abbreviated CRC). This code is sent along with the data over the bus. The recipient runs the same computation on the data and checks to see if it gets the same value that the sender computed; if there is any difference then an error occurred. In fact, modern CRC implementations don't actually run the computations using formulas, but rather use pre-created tables to speed up the process. This is sort of like using "multiplication tables" as you might have memorized as a child, instead of doing the computation from scratch each time.
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