So what do we mean when we say the ROOT of your micro SD card? Simply put, it means the main directory of your SD card.
If you have this folder and file within or inside another folder, your will get an error message on your 3DS consoles screen, and the r4 menu system will not load up or enable you to load any of your apps, media or games. There should only be one file named R4.dat - without exception. There should be three folders, called moonmemo, moonshl2, and R4iMenu. The only file and folder you should have in the ROOT of your micro SD Card can be seen below. If you copy over that folder, with the file and folder below over to your micro SD card, you WILL see an error message. This is a very common mistake, and people often unarchive or uncompress the firmware files, which most of the time creates a folder that has the same name as the firmware files themselves. If you're seeing an error message on yoru 3DS or DSi system, and have the firmware files loaded, it is more than likely due to the firmware kernel being put in the wrong place on the card itself.
It actually has only one file and one folder that have to be copied over to them micro SD Card in order for the R4 menu to display and show up when you load it. Much like all of our other R4 3DS Cards, the R4 3DS Dual Core (Some people call it the R4i DualĬore 3DS Card) is very easy to install and setup for all of your emulation and gaming needs.
