They mentioned making the root fs read-only which (if they are using the config tools) does use overlayfs: https://raspberrypi.stackexchange.com/questions/1246

They mentioned making the root fs read-only which (if they are using the config tools) does use overlayfs: https://raspberrypi.stackexchange.com/questions/124628/raspbian-enable-disable-overlayfs-from-terminal https://raspberrypi.stackexchange.com/questions/124628/raspb...