diff --git a/sys/arch/x68k/conf/INSTALL b/sys/arch/x68k/conf/INSTALL
index c11097e3cf51..f063a5eff0c8 100644
--- a/sys/arch/x68k/conf/INSTALL
+++ b/sys/arch/x68k/conf/INSTALL
@@ -1,4 +1,4 @@
-#	$NetBSD: INSTALL,v 1.13 1999/04/12 16:11:53 minoura Exp $
+#	$NetBSD: INSTALL,v 1.14 1999/04/14 14:13:11 minoura Exp $
 
 #
 #	INSTALL -- installation kernel.
@@ -15,7 +15,7 @@ options 	MEMORY_DISK_SERVER=0	# No user space hooks
 #options 	MINIROOTSIZE=2400	# 1.2M, same as a 130mm floppy
 #options 	MINIROOTSIZE=2880	# 1.44M, same as a 90mm floppy
 options 	MINIROOTSIZE=2048
-options 	BUFCACHE=10
+options 	BUFCACHE=5		# Reserve 5% of the RAM as the cache.
 
 ## System kernel configuration.  See options(4) for more detail.
 
@@ -145,7 +145,7 @@ file-system	FFS		# Berkeley Fast Filesystem
 file-system	NFS		# Sun NFS-compatible filesystem client
 file-system	KERNFS		# kernel data-structure filesystem
 #file-system	NULLFS		# NULL layered filesystem
-file-system	MFS		# memory-based filesystem
+#file-system	MFS		# memory-based filesystem
 #file-system	FDESC		# user file descriptor filesystem
 #file-system	UMAPFS		# uid/gid remapping filesystem
 #file-system	LFS		# Log-based filesystem (still experimental)