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Why do older USB drives corrupt zip files? The file size appears the same, but the CRC check fails.

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the old usb drives isn't healthy, broken, most likely – Joakim Elofsson Oct 8 '09 at 18:32
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Your USB drive is toast. It probably has bad blocks in the filesystem somehow (hardware failure? Who knows). You only particularly notice it with zip files because they have a CRC to test their own integrity. Throw the flash drive away.

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