How can I install Arch Linux on a software raid?

Hi Guys, I've been at this for 3 days now and I can't get it to work. Basically I have 2 500GB SATA HDDs and I want them both on a raid1 array. I had it working on Ubuntu with no issues but the installer did all the work for me. I have attempted to follow the instructions on the wiki for Raid and LVM but I quickly get lost and I don't understand the LVM stuff. I managed to get 2 arrays up (md0 for /boot and md1 for /) but I was contently running into errors trying to install grub. In my last attempt I somehow managed to get grub installed on /dev/sda and /dev/sdb but then when I reboot the system it fails to mount /dev/md0 or /dev/md1 these raid devices don't appear in the /dev/ directory and I cannot bring them up manually. I have been all over Google and I can't find a comprehensive guide to setting up a raid 1 array and installing Arch. If anyone can direct me to useful instructions or layout the procedure for me I would really appreciate it.
Thank You.

This is genius, sheer brilliance. When I wanted to raid my Ubuntu install I specifically wanted to install a new HDD and just raid it with my existing disk but I had to download and alternate install CD and re-install the OS. I searched all over the net for an alternative and could not find anything. It's baffling that I had to start a thread to find such an insanely useful utility. Unless I'm taking the wrong approach. I mean, doesn't everybody raid if they can? Is there a better way to backup your disk? Why is it so difficult to find any useful information about raiding your disks? ... but I digress. Despite the fact that nobody else seems to know about this tool I know about it now and it seems to be the key to solving my problem. But I still have one problem. I have installed Arch on /dev/sda1. I downloaded (with wget), compiled, installed, and ran raider. I followed the on-screen instructions to the letter. When I swapped the disks and rebooted. I get pass the grub screen and get this error during boot.
Waiting 10 seconds for device /dev/md1 ...
Root device '/dev/md1' doesn't exist. attempting to creat it.
ERROR: Unable to determine major/minor number of root device '/dev/md1'.
You are being dropped to a recovery shell.
Type 'exit' to try and continue booting
/bin/sh: can't access tty; job control turned off
[ramfs /]#
I cannot type anything at this prompt. No response from the keyboard. I'm so close to getting this to finally work. Dose anyone know what might be going wrong.
Thank you guys for all your help.

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How can I install Arch Linux on a software raid?

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