Index: doc/src/sgml/wal.sgml
===================================================================
RCS file: /cvsroot/pgsql/doc/src/sgml/wal.sgml,v
retrieving revision 1.61
diff -c -c -r1.61 wal.sgml
*** doc/src/sgml/wal.sgml	3 Feb 2010 17:25:06 -0000	1.61
--- doc/src/sgml/wal.sgml	20 Feb 2010 18:26:40 -0000
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*** 59,65 ****
     same concerns about data loss exist for write-back drive caches as
     exist for disk controller caches.  Consumer-grade IDE and SATA drives are
     particularly likely to have write-back caches that will not survive a
!    power failure.  To check write caching on <productname>Linux</> use
     <command>hdparm -I</>;  it is enabled if there is a <literal>*</> next
     to <literal>Write cache</>; <command>hdparm -W</> to turn off
     write caching.  On <productname>FreeBSD</> use
--- 59,66 ----
     same concerns about data loss exist for write-back drive caches as
     exist for disk controller caches.  Consumer-grade IDE and SATA drives are
     particularly likely to have write-back caches that will not survive a
!    power failure.  Many solid-state drives also have volatile write-back
!    caches.  To check write caching on <productname>Linux</> use
     <command>hdparm -I</>;  it is enabled if there is a <literal>*</> next
     to <literal>Write cache</>; <command>hdparm -W</> to turn off
     write caching.  On <productname>FreeBSD</> use