Index: usr.sbin/bsdinstall/scripts/rootpass
===================================================================
--- usr.sbin/bsdinstall/scripts/rootpass
+++ usr.sbin/bsdinstall/scripts/rootpass
@@ -33,7 +33,15 @@
 echo "========================"
 echo
 
-echo "Please select a password for the system management account (root):"
-echo "Typed characters will not be visible."
+if [ -z "$ROOTPASS_ENC" ] && [ -z "$ROOTPASS_PLAIN" ]; then
+	echo "Please select a password for the system management account (root):"
+	echo "Typed characters will not be visible."
 
-chroot $BSDINSTALL_CHROOT passwd root 2>&1
+	chroot $BSDINSTALL_CHROOT passwd root 2>&1
+else
+	if [ -n "$ROOTPASS_PLAIN" ]; then
+		echo "$ROOTPASS_PLAIN" | pw -R $BSDINSTALL_CHROOT usermod root -h 0
+	else
+		echo "$ROOTPASS_ENC" | pw -R $BSDINSTALL_CHROOT usermod root -H 0
+	fi
+fi