I'm running Recalbox 8 on GPi Case 2 and trying to add couple of new systems, MSU-MD and SNES MSU1. I have this inside /recalbox/share/system/.emulationstation/systemlist.xml (I also tried naming this es_systems.cfg)
<system name="msu-md" fullname="Sega Genesis MSU" platforms="msu-md">
<descriptor path="%ROOT%/msu-md" theme="megadrive" extensions=".md .smd .68k .bin .mdx .gen .7z .zip" icon="$F26b"/>
<scraper screenscraper="1"/>
<properties type="console" pad="mandatory" keyboard="no" mouse="no" lightgun="recommended" releasedate="1988-10" retroachievements="1"/>
<emulatorList>
<emulator name="libretro">
<core name="genesisplusgx" priority="2" extensions=".68k .mdx .bin .gen .md .smd .zip .7z" netplay="1" compatibility="high" speed="high"/>
</emulator>
</emulatorList>
</system>
<system name="snes-msu" fullname="Super NES MSU-1" platforms="snes">
<descriptor path="%ROOT%/snes-msu" theme="snes" extensions=".sfc .fig .dx2 .smc .bs .gd7 .bsx .7z .zip .gd3 .swc .st" icon="$F25e"/>
<scraper screenscraper="4"/>
<properties type="console" pad="mandatory" keyboard="no" mouse="optional" lightgun="optional" releasedate="1990-11" retroachievements="1"/>
<emulatorList>
<emulator name="libretro">
<core name="snes9x" priority="2" extensions=".smc .sfc .swc .fig .bs .st .7z .zip" netplay="1" compatibility="high" speed="high"/>
</emulator>
</emulatorList>
</system>
They do not appear in EmulationStation. I copied from share_init from snes and megadrive but removed the uuid. Is it something wrong with the xml file?