Tell users to probe/backup first

Corresponding to flashrom svn r931.

Signed-off-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
diff --git a/flashrom.8 b/flashrom.8
index 9c21278..25f4a1e 100644
--- a/flashrom.8
+++ b/flashrom.8
@@ -22,7 +22,11 @@
 .PP
 You can specify one of \-E, \-r, \-w, \-v or no operation.
 If no operation is specified, then all that happens
-is that flash info is dumped and the flash chip is set to writable.
+is that flash info is dumped and the flash chip is set to writable. It is
+recommended that if you try flashrom the first time on a system, you run it
+in probe only mode and check the output. Also you are advised to make a
+backup of your current ROM contents with \-r before you try to write a new
+image.
 .TP
 .B "\-r, \-\-read <file>"
 Read flash ROM contents and save them into the given