Hello
A few weeks ago I bought some cheap "Vansung" or "Vansuny" flash drives on Amazon.
I tested them with some specific tools (H2testw, FakeFlashTest, ChipGenius,... ) but I couldn't detect any problem.
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.
Every test always "confirmed" the stated capacity, but I wasn't convinced it would continue working.
Now a few weeks later one of these flash drives is dead: "unkown usb device, set address failed".
I tested it on different computers, I get the same error on every computer.
I tried to fix it with diskpart but the disk dissapears from the list before I can select it.
I think it's a hardware issue (bad/cheap controller inside?) but I don't know how they do it.
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.
Does anyone know if there are other tests or tools available (except for the tools that test the capacity) for detecting fake flash drives ?
Update:
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 did not buy them thinking it was a good deal but I wanted to test them and see if it's possible to discover how they manage to "program" it to change the capacity or to make it only work in the first couple of weeks.
A few weeks ago I bought some cheap "Vansung" or "Vansuny" flash drives on Amazon.
I tested them with some specific tools (H2testw, FakeFlashTest, ChipGenius,... ) but I couldn't detect any problem.
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.
Every test always "confirmed" the stated capacity, but I wasn't convinced it would continue working.
Now a few weeks later one of these flash drives is dead: "unkown usb device, set address failed".
I tested it on different computers, I get the same error on every computer.
I tried to fix it with diskpart but the disk dissapears from the list before I can select it.
I think it's a hardware issue (bad/cheap controller inside?) but I don't know how they do it.
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.
Does anyone know if there are other tests or tools available (except for the tools that test the capacity) for detecting fake flash drives ?
Update:
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 did not buy them thinking it was a good deal but I wanted to test them and see if it's possible to discover how they manage to "program" it to change the capacity or to make it only work in the first couple of weeks.
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