Table has four columns, not three.

svn path=/head/; revision=10941

en_US.ISO8859-1/books/handbook/install/chapter.sgml

@@ -1,7 +1,7 @@
 <!--
      The FreeBSD Documentation Project
 
-     $FreeBSD: doc/en_US.ISO8859-1/books/handbook/install/chapter.sgml,v 1.124 2001/10/08 20:30:47 chern Exp $
+     $FreeBSD$
 -->
 
 <chapter id="install">
@@ -2253,7 +2253,7 @@ Mounting root from ufs:/dev/md0c
       <table frame="none">
 	<title>Partition Layout for Subsequent Disks</title>
 
-	<tgroup cols="3">
+	<tgroup cols="4">
 	  <thead>
 	    <row>
 	      <entry>Partition</entry>