On Sun, 2 Oct 2011, Mike Miller wrote:

> Next I ran these two commands (one line each) to create the raid:
>
> sudo mdadm --create /dev/md0 --level 1 --raid-devices 2 /dev/sda1 /dev/sdb1 --metadata=0.90
> sudo mdadm --create /dev/md1 --level 1 --raid-devices 2 /dev/sda2 /dev/sdb2 --metadata=0.90


I forgot to mention that mdadm is not available on the Ubuntu 10.10 x64 
Desktop Live CD.  To get mdadm I had to run this from the terminal window:

sudo apt-get install mdadm

That also installs postfix (a surprise to me) and while installing postfix 
it fills the screen in blue and asks two questions.  For the first one I 
chose "local" and for the second I took the default name which was 
"ubuntu".

Mike