What is the CRC Value in Zip and RAR Files
Cyclic redundancy check (CRC) is an algorithm that can be used to detect changes in data. In a Zip or RAR archive, when a file item is archived into it, other than the compressed file data, the CRC value of the uncompressed file data is also calculated and stored together. Thus when the file item is extracted, the unzip or unrar program should also calculate the CRC value of the uncompressed data and compare it with the stored one. If they are the same, then the file data should be intact....
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3 Free Ways to Repair Corrupt Zip or RAR Archives
Many popular Zip tools, such as WinZip, WinRAR, and 7-Zip, support to repair corrupt Zip archives for free, as below:
1. Using WinZip to repair damaged Zip archives
WinZip is a trialware. During the evaluation period, you can use all functions in it. To repair corrupt Zip archives with WinZip:
In the Start menu search box, input "Command Prompt".
In the search result, right-click "Command Prompt".
In the command prompt, input the following command and press Enter:"C:\Program...
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