Quote:
Originally Posted by Rockman413
--->If my target computer/drive completes copying without errors, then can I trust all copied files are same as original and non-corrupted? Of course if the target computer/drive have a lot of bad sectors the files can be corrupted, but I copy them to another new target drive and it completes the copying without any system error message, then I can trust that all the data is the same as original, unless the new target disk have bad sectors to damage the datas... correct?
meaning, is there any possibility that I copy audio files from my computer to a target computer drive(which has no bad sectors) using a questionable drive , though I didn't get any system copy-error messages, but the data/audio files on the target computer drive can be corrupted because of the questionable drive which is used to transfer the audio files?
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This is a simple-seeming question, but it really depends on the specifics.
When you copy files, validation is usually handled by the operating system. I don't believe that operating systems generally perform a full "verify" operation when you copy a file, though they probably compare metadata, like file size, to confirm that the source and target are the same size. Generally, if no error is reported, you can be confident that the file is not corrupt. But "not corrupt" is not the same thing as "exactly the same as the source."
There are specialized copying and backup applications that will perform a full "verify" operation, where the source and target are compared, block by block, to ensure that they are exactly the same. Full verify operations are time-consuming and often take just as long as the actual copy operation. An alternative is to manually generate a checksum for a file, before it is copied, and then get a checksum for the file after it is copied and confirm that they match.