What happens is that when that 16GB SD card fills up, the card just starts overwriting the first data in a loop. Check both Automatically fix file system errors and Scan for and attempt recovery of bad sectors. So, for example, your “128GB” SD card might only have 16 GB of actual capacity. Check and repair SD card for errors in Windows Open Windows Explorer, right-click your SD card, go to Properties >Tools > Check now. Since small-capacity SD cards are so cheap but larger ones are many times more expensive, scammers create cards that report false capacities. “Fake” in the sense that the capacity you were sold isn’t what’s actually on the card.įake SD cards are a scourge of modern technology. There’s a possibility that you’ve actually bought a fake SD card. If this is a new SD card or one that you’ve never really filled up before. In these cases, after you’ve recovered what data you can, you can simply reformat the card to make it usable. Like FakeFlashTest, H2testw checks the free space on the drive by writing files. Maybe it lost power while writing or there’s some other problem with it. They do make proprietary Nano-Memory Cards that work with their devices. It’s entirely possible that your SD card is just fine, but that the device that reads and writes data from the card messed up somehow.
If the common offender is indeed the SD card, then read on for further advice.
Try a known working SD card in the same device.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.
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.
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