diff --git a/etc/rc b/etc/rc
index 6d2d25079f8b..2a301087f07c 100644
--- a/etc/rc
+++ b/etc/rc
@@ -1,5 +1,5 @@
 #!/bin/sh
-#	$Id: rc,v 1.95 1996/07/18 19:09:06 pst Exp $
+#	$Id: rc,v 1.96 1996/07/30 06:28:59 jkh Exp $
 #	From: @(#)rc	5.27 (Berkeley) 6/5/91
 
 # System startup script run by init on autoboot
@@ -91,6 +91,12 @@ if [ -f /etc/sysconfig ]; then
 	. /etc/sysconfig
 fi
 
+# Add additional swapfile, if configured.
+if [ "x$swapfile" != "xNO" -a -w $swapfile -a -f /dev/vn0b ]; then
+	echo "Adding $swapfile as additional swap."
+	/usr/sbin/vnconfig /dev/vn0b $swapfile && swapon /dev/vn0b
+fi
+
 # configure serial devices
 if [ -f /etc/rc.serial ]; then
 	. /etc/rc.serial
diff --git a/etc/sysconfig b/etc/sysconfig
index 5da75aae5119..cdea2c3d6662 100644
--- a/etc/sysconfig
+++ b/etc/sysconfig
@@ -4,7 +4,7 @@
 # This is sysconfig - a file full of useful variables that you can set 
 # to change the default startup behavior of your system.
 #
-#	$Id: sysconfig,v 1.46 1996/05/13 02:21:16 jkh Exp $
+#	$Id: sysconfig,v 1.47 1996/06/23 20:54:26 ache Exp $
 
 ######################### Start Of Local Configuration Section ###########
 
@@ -209,6 +209,10 @@ dumpdev=NO
 # Set to YES if you want kernel crashdumps to be saved for debugging
 savecore=NO
 
+# Set to an additional swapfile you'd like to have added to preallocated swap
+# space during system boot (or NO for none).
+swapfile=NO
+
 # Set to YES if you want to run Kerberos authentication
 kerberos_server=NO