@Darksavior One other potential problem with /tmp/retroarch came to my mind. If it doesn't exist on boot time because RA deleted it, the auto-mount via fstab will fail. After one successful mount however, it will be protected from deletion by the mount.

Thus, the safe sequence would be:

Create the directory via mkdir -p /tmp/retroarch Edit the fstab like described above. Reboot.

Then, the directory will be there on boot time, the mount to ram will happen, and prevent deletion until shutdown. Rinse and repeat. :)

This isn't necessary if the whole /tmp is mounted to ram, of course.