There is also a similar problem of low quality drives (which may or may not also be counterfeit). The counterfeit drives we have examined appear to have the stated capacity in Windows Properties and it is not until you test the drive with BurnInTest that you see that there is significantly less real space.

This is sometimes refered to as fake 'oversize capacity'. The second is Test Empty Space this one writes test files to the remaining free space on your drive - this test is not destructive, but if you do have a fake, then you could lose your data.įakeFlashTest is designed to perform a quick check to verify if a flash memory device is fake (i.e., they have been programmed to lie about their size) it does not check all memory faults.There are many fake capacity USB flash drives on the market that claim a particular capacity, but only delivery somewhat less than this (particularly the larger drives). The first is the Quick Size Test it will check your drive and report the actual capacity and warn if the drive is fake - this test is destructive and the author states that you WILL lose files. But that is not all it can help prevent corruption for example, a 32 GB SD card may only have 4 GB of memory, and once you fill that 4 GB space, it can potentially become corrupted, resulting in a loss of all the data stored.įakeFlashTest includes two tests, and due to the nature of these tests, we strongly recommend backing up all data stored in the test subjects. This is a pretty slick and simple tool for verifying that you have the memory size you paid for. FakeFlashTest is for testing the actual memory size of USB Flash Drives and SD cards.

Test usb key fakeflashtest