cat $er_md5sum_file >$er_overlay_file
elif [ "$er_extroot_overlay_md5sum" != "$er_extroot_md5sum" ]; then
pi_extroot_mount_success="false"
cat $er_md5sum_file >$er_overlay_file
elif [ "$er_extroot_overlay_md5sum" != "$er_extroot_md5sum" ]; then
pi_extroot_mount_success="false"