How would I check if a second hand micro SD is fake?
You can check the manufacturer code by issuing identification commands over SPI or SD bus.
You would need special hardware or really old PCI SD card readers since USB-based SD card readers will drop this information and pass on the manufacturer of the SD card reader itself to the computer.
it will likely break. had a 16GB "sandisk". after being filled with music and being rarely used the thing just died within 1y.
the price wasnt even so good, so i guess you have to find a trustworthy seller. in germany you are not even safe on amazon as they usually use other resellers. the big electronics stores are safe though.
run that and test it. i recently bought some cheap 128GB usb drives on ebay. one only had 9GB useable space and the other was like 15GB or so. it would let you write larger amounts of data to it (sometimes all 128GB) but you couldn't read it back. easy way to lose precious data.
OP here. Thanks, I ran a quick a quick search for a n open source alternative and found something called F3. I'm not near my PC right now so I'll check it out when I can.
Haha, yeah I guess a cheapfag like me fell for the cheap shit scam, although to be fair I did buy it from a reputable UK second hand electronics store (CEX). So I wasn't expecting to be looking for whether or not it could be fake when it started playing up.