For anyone that wants to hide multiple .bin files see the following pulled from the wiki:
You generally don't need to edit /etc/fstab, use store_games_on_a_nas instead.
You should not modify /usr/share/emulationstation/es_systems.cfg. Instead, copy this file to /userdata/system/configs/emulationstation/es_systems.cfg and customize it from there. At startup, EmulationStation prefers the latter file if it exists.
This has been discussed previously but not in the finite detail that a linux noob would understand.
I have found where the config file has been moved to (in files) and have removed .bin & .BIN under "saturn". Saved, exited files, updated the games list and voila....10+ part games a thing of the past........except they're not. When i reboot they are right back there. I presume that it is because I am trying to do this within the environment rather than from a command prompt.
If anyone can help with a solution to this so that the setting saves or can let me know if they're is a key combination to press for a command prompt (tried alt and f2 as in recalbox but no dice) it would be appreciated greatly.