diff --git a/model/css-rdn1edgex2.sh b/model/css-rdn1edgex2.sh
index d900cba..d0203ab 100644
--- a/model/css-rdn1edgex2.sh
+++ b/model/css-rdn1edgex2.sh
@@ -10,6 +10,7 @@
 cat <<EOF >"$model_param_file"
 
 -C board0.flashloader0.fname=$fip_bin
+-C board0.virtioblockdevice.image_path=$busybox_bin
 -C css0.cmn600.force_rnsam_internal=false
 -C css0.cmn600.mesh_config_file=RD_N1_E1_cmn600.yml
 -C css0.gic_distributor.ITS-device-bits=20