Ok, I realise I am starting to sound boring here, so skip the technical crap and we move on to the next part. You see it does not really what file system is used as the controller "translates" it fit for the memory type used. When you start writing to it the first block is being filled, once full the second is being filled and so on. See it as a tower with the controller at the bottom and the memory blocks on top of it.
Here is also the point where all the fakes fool you.
So you have the controller taking your data and shifting it onto the actual memory chips. This is one reason why a 16GB chip never can take the full 16GB, usually between 14.5 and 15.8GB. Some areas of the memory can't be accessed with normal tools as they contain the actual info on the addressing and type of memory. Like a hard drive each flash memory not only contains a memory chip but also a controller to transfer the data. It does not matter if you have a USB stick or SD card, the only difference is the connection type and the way it is addressed, in most cases you can find the same memory chips in both types. What happens is that when that 16GB SD card fills up, the card just starts overwriting the first data in a loop.Let me tell you a bit about the way these memory devices actuall work (in simple terms). So, for example, your “128GB” SD card might only have 16 GB of actual capacity. 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. Maybe it lost power while writing or there’s some other problem with it. 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.
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