From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mitchell Laks <mlaks@post.harvard.edu>
Subject: Re: how to create a degraded raid1 with only 1 of 2 drives ??
Date: Sun, 20 Jan 2008 14:52:53 -0500
Message-ID: <20080120195253.GA11393@earthlink.net>
References: <20080120192801.GA11149@earthlink.net>
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I think my error was that maybe I did not
do write the fdisk changes to the drive with 
fdisk w

so I did
fdisk /dev/sda
p
then 
w
and then when I did

mdadm -C /dev/md0 --level=2 -n2 /dev/sda1 missing

it worked and set up the array.

Thanks for being there!

Mitchell