+if [ -f $VTOY_PATH/ventoy_persistent_map ]; then
+ VTOVERLAY="rd.live.overlay=/dev/dm-1:/vtoyoverlayfs/overlayfs"
+
+ if [ -e /sbin/dmsquash-live-root ]; then
+ echo "patch /sbin/dmsquash-live-root for persistent ..." >> $VTLOG
+ $SED "/mount.*devspec.*\/run\/initramfs\/overlayfs/a . /ventoy/hook/rhel7/ventoy-overlay.sh" -i /sbin/dmsquash-live-root
+ $SED "s/osmin.img/osmin.imgxxxx/g" -i /sbin/dmsquash-live-root
+ fi
+
+ #close selinux
+ $BUSYBOX_PATH/mkdir -p $VTOY_PATH/selinuxfs
+ if $BUSYBOX_PATH/mount -t selinuxfs selinuxfs $VTOY_PATH/selinuxfs; then
+ echo 1 > $VTOY_PATH/selinuxfs/disable
+ $BUSYBOX_PATH/umount $VTOY_PATH/selinuxfs
+ fi
+ $BUSYBOX_PATH/rm -rf $VTOY_PATH/selinuxfs
+fi
+
+
+echo "VTKS=$VTKS VTOVERLAY=$VTOVERLAY" >> $VTLOG
+
+if ls $VTOY_PATH | $GREP -q 'ventoy_dud[0-9]'; then
+ for vtDud in $(ls $VTOY_PATH/ventoy_dud*); do
+ vtInstDD="$vtInstDD inst.dd=file:$vtDud"
+ done
+fi
+echo "vtInstDD=$vtInstDD" >> $VTLOG