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From: Livhu Tshisikule <livhu.tshisikule@telkomsa.net>
Organization: Dembe Open Source Unix Solutions
To: freebsd-questions@freebsd.org
Date: Wed, 4 Aug 2004 10:49:26 +0200
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Message-Id: <200408041049.26858.livhu.tshisikule@telkomsa.net>
Subject: Mirror hard disk using dd.
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Hi,

I installed a second harddisk on my FBSD 5.2.1 box and then use dd if=/dev/ado 
of=/dev/ad1. I later removed my first disk so that I can test the second 
disk. After booting it goes to single user mode and then I used fsck -y 
command. I then mounted the /usr only to find that id did not copy everything 
from the first disk.

1. I want to make an exact copy of the first disk, how can I do that.
2. Later I want to copy what has changed to disk2 once a day. 

Regards
Livhu