gm9i will let you mount/boot literally anything named ".nds"

[rvtr]

Exactly what the title says, though also ".dsi" and ".srl" and ".app". You can't tell from the image but this made my DSi freeze... and now it shows whatever being mounted, but I can't leave!

I've done this by accident a lot of times with the data titles in NAND. I'm definitely more of an edge case but it might be good to have a check in place just in case. (for me, literally just for me because who is messing with data titles ever)