diff --git a/en_US.ISO8859-1/books/handbook/basics/chapter.sgml b/en_US.ISO8859-1/books/handbook/basics/chapter.sgml
index 7762755179..f51ddb710c 100644
--- a/en_US.ISO8859-1/books/handbook/basics/chapter.sgml
+++ b/en_US.ISO8859-1/books/handbook/basics/chapter.sgml
@@ -868,7 +868,7 @@ total 530
 	directory can then contain other directories.</para>
 
       <para>So far this is probably similar to any other operating system you
-	may have used.  There are a few differences; for example, DOS uses
+	may have used.  There are a few differences; for example, &ms-dos; uses
 	<literal>\</literal> to separate file and directory names, while &macos;
 	uses <literal>:</literal>.</para>
 
@@ -1017,7 +1017,7 @@ total 530
 	</textobject>
       </mediaobject>
 
-      <para>If you are familiar with DOS, this is similar, although not
+      <para>If you are familiar with &ms-dos;, this is similar, although not
 	identical, to the <command>join</command> command.</para>
 
       <para>This is not normally something you need to concern yourself with.
@@ -1294,7 +1294,7 @@ total 530
 
 	<para>This diagram shows FreeBSD's view of the first IDE disk attached
 	  to the system.  Assume that the disk is 4&nbsp;GB in size, and contains
-	  two 2&nbsp;GB slices (DOS partitions).  The first slice contains a DOS
+	  two 2&nbsp;GB slices (&ms-dos; partitions).  The first slice contains a &ms-dos;
 	  disk, <devicename>C:</devicename>, and the second slice contains a
 	  FreeBSD installation.  This example FreeBSD installation has three
 	  partitions, and a swap partition.</para>