To avoid further misunderstandings: I knew before I bought the flash drives they were 'fake' and they would not have the stated capacity (or that they would die eventually). I know there are a lot of tools that can test the capacity of flash drives but in my case this was not really useful.ĭoes anyone know if there are other tests or tools available (except for the tools that test the capacity) for detecting fake flash drives ? I think it's a hardware issue (bad/cheap controller inside?) but I don't know how they do it. I tried to fix it with diskpart but the disk dissapears from the list before I can select it. I tested it on different computers, I get the same error on every computer.

Now a few weeks later one of these flash drives is dead: 'unkown usb device, set address failed'.

I was expecting the flash drives to be very slow and only have a small percentage of the stated capacity but at first it looked OK.Įvery test always 'confirmed' the stated capacity, but I wasn't convinced it would continue working. I tested them with some specific tools (H2testw, FakeFlashTest, ChipGenius.

A few weeks ago I bought some cheap 'Vansung' or 'Vansuny' flash drives on Amazon.

Fakeflashtest.