diff --git a/sys/conf/NOTES b/sys/conf/NOTES
index 5d9e1e643cd9..671bdfd00c1f 100644
--- a/sys/conf/NOTES
+++ b/sys/conf/NOTES
@@ -2,7 +2,7 @@
 # LINT -- config file for checking all the sources, tries to pull in
 #	as much of the source tree as it can.
 #
-#	$Id: LINT,v 1.173 1995/04/24 04:30:19 dyson Exp $
+#	$Id: LINT,v 1.174 1995/04/24 05:33:59 phk Exp $
 #
 # NB: You probably don't want to try running a kernel built from this
 # file.  Instead, you should start from GENERIC, and add options from
@@ -243,6 +243,10 @@ options		PROCFS			#Process filesystem
 options		UMAPFS			#UID map filesystem
 options		UNION			#Union filesystem
 
+# Make space in the kernel for a MFS rootfilesystem.  Define to the number
+# of kilobytes to reserve for the filesystem.
+options		"MFS_ROOT=10"
+
 #
 # Disk quotas are supported when this option is enabled.  If you
 # change the value of this option, you must do a `make clean' in your
diff --git a/sys/i386/conf/LINT b/sys/i386/conf/LINT
index 5d9e1e643cd9..671bdfd00c1f 100644
--- a/sys/i386/conf/LINT
+++ b/sys/i386/conf/LINT
@@ -2,7 +2,7 @@
 # LINT -- config file for checking all the sources, tries to pull in
 #	as much of the source tree as it can.
 #
-#	$Id: LINT,v 1.173 1995/04/24 04:30:19 dyson Exp $
+#	$Id: LINT,v 1.174 1995/04/24 05:33:59 phk Exp $
 #
 # NB: You probably don't want to try running a kernel built from this
 # file.  Instead, you should start from GENERIC, and add options from
@@ -243,6 +243,10 @@ options		PROCFS			#Process filesystem
 options		UMAPFS			#UID map filesystem
 options		UNION			#Union filesystem
 
+# Make space in the kernel for a MFS rootfilesystem.  Define to the number
+# of kilobytes to reserve for the filesystem.
+options		"MFS_ROOT=10"
+
 #
 # Disk quotas are supported when this option is enabled.  If you
 # change the value of this option, you must do a `make clean' in your
diff --git a/sys/i386/conf/NOTES b/sys/i386/conf/NOTES
index 5d9e1e643cd9..671bdfd00c1f 100644
--- a/sys/i386/conf/NOTES
+++ b/sys/i386/conf/NOTES
@@ -2,7 +2,7 @@
 # LINT -- config file for checking all the sources, tries to pull in
 #	as much of the source tree as it can.
 #
-#	$Id: LINT,v 1.173 1995/04/24 04:30:19 dyson Exp $
+#	$Id: LINT,v 1.174 1995/04/24 05:33:59 phk Exp $
 #
 # NB: You probably don't want to try running a kernel built from this
 # file.  Instead, you should start from GENERIC, and add options from
@@ -243,6 +243,10 @@ options		PROCFS			#Process filesystem
 options		UMAPFS			#UID map filesystem
 options		UNION			#Union filesystem
 
+# Make space in the kernel for a MFS rootfilesystem.  Define to the number
+# of kilobytes to reserve for the filesystem.
+options		"MFS_ROOT=10"
+
 #
 # Disk quotas are supported when this option is enabled.  If you
 # change the value of this option, you must do a `make clean' in your