diff --git a/en_US.ISO8859-1/books/developers-handbook/kerneldebug/chapter.sgml b/en_US.ISO8859-1/books/developers-handbook/kerneldebug/chapter.sgml
index 80895d7fb2..4ca9e2c368 100644
--- a/en_US.ISO8859-1/books/developers-handbook/kerneldebug/chapter.sgml
+++ b/en_US.ISO8859-1/books/developers-handbook/kerneldebug/chapter.sgml
@@ -146,6 +146,12 @@
   <sect1 id="kerneldebug-gdb">
     <title>Debugging a Kernel Crash Dump with <command>kgdb</command></title>
 
+    <note>
+      <para>This section covers &man.kgdb.1; as found in &os;&nbsp;5.3
+	and later.  In previous versions, one must use
+	<command>gdb -k</command> to read a core dump file.</para>
+    </note>
+
     <para>Once a dump has been obtained, getting useful information
       out of the dump is relatively easy for simple problems.  Before
       launching into the internals of &man.kgdb.1; to debug