When useing my R4 in the DS their are always a couple file I do not want to see like "_moonshell" or something like that. I found a super easy way to make it so that when on your DS you do not see the file at all! So slap that microSD into your computer somehow, and open up and find the files you DO NOT want to see when it is in your DS. 1: Right click, go to "properties". 2: Look on the first tab till you find "attributes". 3: Make sure there is a check int he box "hidden". 4: Do not forget to APPLY the new setting! 5: Put the micro SD back into your flash cart of choice, boot it up, and the file will not show up! Things I like to do this with: Firmware folder Moonshell folder Parts of emulators besides the .nds file that boots it. So yeah, try it.