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Usb device appearing as zero bytes

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Have you written to the pendrive alot? It may have exceeded its write cycles. Pendrives generally have very bad (crappy) NAND flash, 3 or 4 bits per cell, and extremely high write amplification.

sub mesa said:
Have you written to the pendrive alot? It may have exceeded its write cycles. Pendrives generally have very bad (crappy) NAND flash, 3 or 4 bits per cell, and extremely high write amplification.



hey,

how would i know if it has already exceeded its write cycles?
thank you for your reply.
i have not yet written so many files on to my USB.

Best solution

Well i don't know what you did with it. But know that USB pendrives use crappy memory; while SSDs use much better 2-bit MLC memory paired with a real SSD controller.

If you used your USB pendrive as linux OS disk; or something similar where the pendrive would see regular small writes; that woul make it fail probably within a month. USB pendrives should be fine to handle large files though.
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