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I have a USB Stick that seems to be write-protected. I already searched and tried a lot of solutions, but they don't work for me. E.g. I tried:

hdparm -r0 /dev/sdb

but that does not change anything. 

badblocks –v

did not show any errors on the disk. Also gparted or the disk-utiliy tool could not make the usb stick work again. In gparted it says I have to create a partition table first, but when I do it it gives me an input/output error and tells me it is an unkown partition table.

I also tried it with Windows, but that was also not successful. Does anyone have other ideas how to make the USB stick writeable again?

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1 Answer 1

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You have to identify manufacturer of this stick, look the vendor id dmesg |tail -5 or lsusb, then download appropriate firmware soft (for example windows AlcorMP) then reformat your stick with last one. In fact that do not only format but also flash the usb microchip.

NB: I'm not sure that this question is ubuntu specific, it should rather be moved to superuser.com

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