@mitu Thanks a lot, it worked like a charm. I'm about to be done with my arcade cabinet!

@BuZz I removed the #emulationstation #auto line 2 of the autostart.sh, and it worked. I didn't think that line would matter since it doesn't effect mame2003 roms launched the same way. Why does multi lines cause this issue? Is there a way to include multiple lines?

Copied my tron.ini file to location /opt/retropie/libretrocores/lr-mame2003-plus/metadata.........it didn't work.

@mitu Yes, I did what you said and I succeeded to lower boot time to 11 seconds for libretro emulator but only through autostart.sh. However, non-libretro emulators still starts about 5 seconds faster through the rc.local script and I dont know what else I could do here. It seems runcommand is a problem, because for some reason it refuses to start through rc.local properly...

You gem. Cheers all sorted

@pyr0cide Just leave the exports on the server /volume1/roms 192.168.1.*(rw,async,no_wdelay,no_root_squash) And make sure you use the proper case when referring to the share name, i.e. not mixing upper-case with lower-case mount -t nfs -o vers=3 192.168.1.6:/volume1/roms /home/pi/RetroPie/roms

I was going to backup after I had sorted a couple of other things. I never messed about with autobash I don't even know what it does. Unless I have accidently done something while in settings.