I believe the overlayfs configured using raspi-config is a little different in that it presents the appearance of a normal filesystem but all changes are gone f

I believe the overlayfs configured using raspi-config is a little different in that it presents the appearance of a normal filesystem but all changes are gone following reboot. Before reboot the changes are cached in RAM which can have consequences for low RAM systems. I use the overlayfs provided by raspi-config.