Hello, I have two SD cards. One card has a capacity of 2GB, the other has a capacity of 64GB. Both cards are formatted to FAT32 file format. The 2GB works fine on my 3DS. But the 64GB card can't be read by my 3DS. After starting up my 3DS there always occurs an error message saying that the files of the sd card couldn't be read. But the strange thing is that the 64GB card works fine on other devices. Every file on it can be read and erased by my PC and Android smartphone for example. Do you have any suggestions what could be the cause for my problem? Thank you for your answers.