Thank you for this! I was thinking about doing something similar as I find that a lot of the roms from the MAME4ALL set are hit or miss as far as compatibility goes. I'm also weeding through all of my console ROM sets separating cross-platform games and only keeping games that received a generally positive reception, games that have a popular cult following, and games that I personally thought were really good.
I agree with Luub ^^ It would be nice to have a simple cfg toggle, or even option menu toggle to set if user prefers the down+right or left+down buttons for two button systems... Hmm, I wonder how difficult it would be to simply alter the controller config script(s) to automatically set the controls the way the user wants for each system so that it doesn't have to be done manually every time a controller is added/reconfigured.
@dem1980, It would be a nice feature to include into ES for sure, but I'd bet retroboy could make a simple script to exit ES, and then start it back up to refresh without having to reboot the whole system.
Hello Skrathe, I think the easiest way might be to simply set the config/boot files as read only.
Excellent! Thanks for the reply. Also, while I have your attention; should I submit a bug report for MAME sound samples not working? Or is that something that has been ironed out already for 3.0?
You might want to consider a fresh install? I don't have any issues switching here... You are removing the ' ; ' (semicolon) at the beginning of the line, right? So it should read: snes_emulator=snes9x NOT: **;**snes_emulator=snes9x ??? Don't know what else it could be... did you by chance change write permission inadvertently? I just access the conf via samba \recalbox (or, \ip.address) and edit with notepad++ ...again, no issues here.
:$ ...my mistake lol I'm not sure if the other "retro" distro's support that feature, but you could always just hand him a pre-configured SD card? Sorry, as far as I know fstab needs to be edited in order for Recalbox to look at the usb drive. Good luck! 
https://github.com/digitalLumberjack/recalbox-os/wiki/Auto-mount-of-usb-in-place-of-share-partition-(EN) btw, you might want to be careful how you phrase things. LEGALLY you are not supposed to be sharing anything... I would read the forum rules 
Trata de programal los dos solos uno primero, disconectalo despues el otro, disconectalo y entonces trata de jugal escojendo jugaldos 1 y 2