Reply To: Specify a keyboard key combination to return to EmulationStation / reboot Pi?

[hacha-dorada]

I am not sure about restarting the Pi (that is something outside the RetroPie capabilities) but if you dig into the RetroPie/configs/all/retroarch.cfg file (or the specific ones for the different systems), you can define buttons for the other functions. A very useful option is to set up a shortcut for the RetroArch menu, that serves to most of your needs.
You can also map hotkeys on you joy for all these functions too.