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How to reset slow usb pen?

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Posted · Original PosterOP

Hello all.


I have a SanDisk Ultra Flair pendrive. It's USB 3.0, 64 GB. I have had it for one or two years now.

It was very fast and I used it for PortableApps, but then I had the concern of persistence of logins and other data, so I encrypted it using BitLocker.


After a few hours, BitLocker had finished encrypted the drive. But it became so slow it was unusable, so I reformatted it to how it was before (exFAT). Still, it remained extremely slow when writing. The read speed is normal, but writing goes down to a few kb/s, which is slower than dial-up internet!


I assume it has to do with the fact that BitLocker wrote over the whole pendrive with its partition and the safety mechanisms against flash memory degradation were overriden.



My question is: Is there a way to reset the drive? I've tried to make a full format under windows, but it's taking forever and I don't know if it's the right tool.



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