I recently bought a class 10 128gb MicroSD card from Sandisk through Amazon. I assumed this would guarantee that it’s real. It looks genuine to me.
However. When I try to copy files onto it I can only put a small amount until the card crashes and starts acting like it’s been ejected and then re-entered into the card reader, over and over until I get an error message telling me that there is nothing in the drive. I have been googling for help and someone mentioned formatting it to FAT32, I tried that and it just became even more unstable.
I also have a class 10 65gb microSD card from sandisk and haven’t experienced anything like this with it.
Is it the card or is it my internal card reader?