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I loaded Ubuntu on to flashdrive. Now I want to remove it but when I try it returns Drive write protected. I have tried sudo dd if=/dev/zero of=/devsdb bs=512 count=1, but that returns Read only file system. I have tried many different USB format programs and all say the same. It does not have a switch on it! It is a 32gb CoreMicro USB flash drive. How do I remove Ubuntu from this USB drive?

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  • You said you used sudo dd if=/dev/zero of=/devsdb bs=512 count=1. Is that a typo in your question, or did you actually run that? (It should be sudo dd if=/dev/zero of=/dev/sdb bs=512 count=1 instead, with a / between dev and sdb.) Or was it something else? Also, when the device is plugged in, what's the ouput of df -h, mount, and file /dev/sdb? Please edit your question to provide all this information.
    – Eliah Kagan
    Feb 10, 2013 at 18:51

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then you have really problem on that drive cause They are no chance to unlock it, my friend have this too and i tried everything on it but can't format or everything.

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  • That is not an answer.
    – guntbert
    Feb 10, 2013 at 21:20

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