Okay, so it turns out that my SD card has 23.6 gb corrupted. Does anyone have any idea on how to fix this kind of problem? Or do I have to buy another sd card?
Yes, I tried two ways of moving sd cards. The first one was by using a usb image tool and another was by drag and dropping. So how would I check the sd card? Thanks for the help.
So lately I've custom firmwared my 3ds, and it was perfectly fine, However when I transferred the data to a 32gb sd card, it started having problems and was unable to download bigger files like pokemon sun or xenoblade chronicles. Since I am using the new 3ds, I have no idea what happened since...