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How can you possible compare so many files so fast?
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We scan for double files. That is, files that are identical. Two files can only be identical if they have the same file size. By only comparing files having the same file size and only continue to compare them till the moment a non-identical byte was found we win a lot of time.
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Can I run FindDoubleFiles in the background?
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While FindDoubleFiles is scanning and you continue to do other work on your computer the program will not disturb you or use so many of your system resources that your computer becomes slow. You can just let it run and inspect the results when it is ready.
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Can I always just delete al double files?
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No you cannot. It could be destructive for the working of your system. Only delete files you know that can be deleted, for example from your music or image collections.
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