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Date:      Wed, 18 Dec 2013 01:22:58 +0000 (UTC)
From:      Warren Block <wblock@FreeBSD.org>
To:        doc-committers@freebsd.org, svn-doc-all@freebsd.org, svn-doc-head@freebsd.org
Subject:   svn commit: r43346 - head/en_US.ISO8859-1/books/handbook/bsdinstall
Message-ID:  <201312180122.rBI1Mwrd042778@svn.freebsd.org>

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Author: wblock
Date: Wed Dec 18 01:22:57 2013
New Revision: 43346
URL: http://svnweb.freebsd.org/changeset/doc/43346

Log:
  Add instructions on using checksums for downloaded images and mention
  cdrecord for burning ISOs on FreeBSD.
  
  Submitted by:	Allan Jude, bcr, and db_ on IRC

Modified:
  head/en_US.ISO8859-1/books/handbook/bsdinstall/chapter.xml

Modified: head/en_US.ISO8859-1/books/handbook/bsdinstall/chapter.xml
==============================================================================
--- head/en_US.ISO8859-1/books/handbook/bsdinstall/chapter.xml	Tue Dec 17 23:20:30 2013	(r43345)
+++ head/en_US.ISO8859-1/books/handbook/bsdinstall/chapter.xml	Wed Dec 18 01:22:57 2013	(r43346)
@@ -391,7 +391,16 @@
 
       <para>Copies of &os; installation media are available at the
 	<link xlink:href="&url.base;/where.html#download">&os; web
-	  site</link>.</para>
+	  site</link>.  Also download
+	  <filename>CHECKSUM.SHA256</filename> from the same directory
+	  as the image file, and use it to check the image file's
+	  integrity by calculating a <emphasis>checksum</emphasis>.
+	  &os; provides &man.sha256.1; for this, while other operating
+	  systems have similar programs.  Compare the calculated
+	  checksum with the one shown in
+	  <filename>CHECKSUM.SHA256</filename>.  The checksums must
+	  match exactly.  If the checksums do not match, the file is
+	  corrupt and should be discarded.</para>
 
       <tip>
 	<para>If you already have a copy of &os; on CDROM, DVD, or USB
@@ -401,7 +410,10 @@
       <para>&os; CD and DVD images are bootable ISO files.  Only one
 	CD or DVD is needed for an install.  Burn the ISO image to a
 	bootable CD or DVD using the CD recording applications
-	available with your current operating system.</para>
+	available with your current operating system.  On &os;,
+	recording is provided by &man.cdrecord.1; from
+	<filename role="port">sysutils/cdrtools</filename>, installed
+	from the Ports Collection.</para>
 
       <para>To create a bootable memory stick, follow these
 	steps:</para>



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