F3 - an alternative to h2testw The "Fight Flash Fraud" or "Fight Fake Flash" tool represents a GPLv3 implementation of the algorithm of h2testw and further improvements to speed up the identification of fake drives as well as making them usable. You can also use these utilities if you want to test the integrity of your USB/flash medium. https://github.com/AltraMayor/f3/issues AltraMayor/f3 Build the additional f3probe, f3brew and f3fix utility (requires sys-block/parted and virtual/udev)