On Windows, how to check that data is unchanged after copying?

Suppose I have large number of files, I copied them to a different location, I want to check all files are properly copied or not, their contents are they corrupted or not. I want to check it on both Linux and Windows. How should I be able to do the same?

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1 Answer

For post-copy file integrity check I recommend MultiHasher. (Is it okay to recommend software in an answer?) It's minimalist design. Just drag and drop files/folders into the main window and wait for hashes to be generated. A hash value is a unique string that changes if and only if file content changes.

To verify copied files on-the-go you can use command-line solution like:

copy /V C:\abc.exe C:\xyz.exe

The parameter /v explicitly tells Windows to check for each file copied for integrity. I think Windows is smart enough to do this when you copy from Explorer but hence explicitly, do it with command-line and add /v.

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