Usage — f3 7.2 documentation

H2testw’s algorithm has been the gold standard for detecting fake flash (see here and here) because it is robust against all counterfeits. However, as drives’ capacity grows, the time to test these newer drives becomes so painful that one rarely runs H2testw’s algorithm on a whole drive, but only a fraction of it. See question “Why test only 25% or 32GB?” on this FAQ for a defense of this approach.