I've been given some flash drives that appear to be fake. The silk screen says 64 gigs, and they show up as 64 gigs to the OS.
However if you attempt to write any files larger than 4 gigs the file becomes corrupted.
How can you quickly tell if a flash drive / sd card is fake, and what the actual size is?
I know about h2testw, but it is in german, and I find it extremely difficult to use. I'm looking for an alternative program, or a way to do this from the command line.
Any platform is fine.