Je n'ai eu aucun message d'erreur durant l'install.
Et je ne vois pas le dossier share_init/system/.emulationstation, pourtant, j'ai bien activé l'affichage des dossiers et fichiers cachés.
Par contre, il y a bien un dossier share/system/.emulationstation
Voici ce que contient le fichier es_systems.cfg :
**<!-- This is the EmulationStation Systems configuration file.
All systems must be contained within the <systemList> tag.-->
<systemList>
<!-- Here's an example system to get you started. -->
<system>
	<!-- A short name, used internally. Traditionally lower-case. -->
	<name>nes</name>
	<!-- A "pretty" name, displayed in menus and such. -->
	<fullname>Nintendo Entertainment System</fullname>
	<!-- The path to start searching for ROMs in. '~' will be expanded to $HOME on Linux or %HOMEPATH% on Windows. -->
	<path>~/roms/nes</path>
	<!-- A list of extensions to search for, delimited by any of the whitespace characters (", \r\n\t").
	You MUST include the period at the start of the extension! It's also case sensitive. -->
	<extension>.nes .NES</extension>
	<!-- The shell command executed when a game is selected. A few special tags are replaced if found in a command:
	%ROM% is replaced by a bash-special-character-escaped absolute path to the ROM.
	%BASENAME% is replaced by the "base" name of the ROM.  For example, "/foo/bar.rom" would have a basename of "bar". Useful for MAME.
	%ROM_RAW% is the raw, unescaped path to the ROM. -->
	<command>retroarch -L ~/cores/libretro-fceumm.so %ROM%</command>
	<!-- The platform to use when scraping. You can see the full list of accepted platforms in src/PlatformIds.cpp.
	It's case sensitive, but everything is lowercase. This tag is optional.
	You can use multiple platforms too, delimited with any of the whitespace characters (", \r\n\t"), eg: "genesis, megadrive" -->
	<platform>nes</platform>
	<!-- The theme to load from the current theme set.  See THEMES.md for more information.
	This tag is optional. If not set, it will default to the value of <name>. -->
	<theme>nes</theme>
</system>
</systemList>
**