Booting to a softRAID 5 filesystem

[noyzy]

Hi,
I have configured my RAID 5 consisting of 3 500GB Hdds (md0) and have copied my filesystem over to this RAID.
I believe that I can not create a boot partition on this Array as it is not a single physical drive.

At the moment I have just left my original drive (hda) in and have the /boot/grub/menu.lst configured like so: (on hda1)

title           Debian GNU/Linux, kernel 2.6.18-5-k7
root            (hd0,0)
kernel          /boot/vmlinuz-2.6.18-5-k7 root=/dev/md0 ro
initrd           /boot/initrd.img-2.6.18-5-k7
savedefault

This seems to work fine....

However, I want to have a backup of my boot so that if this drive dies I can still access my RAID5 array.

Is it possible to mirror RAID this boot drive over 2 physical drives?

I am using softraid.

*Before trying to mirror this drive I just had a quick go at copying it to another hdd to see if it would boot properly.
I tried to copy this entire filesystem to another harddrive, physically disconnect the original drive and leave only the copied drive in and set bios up to boot off this new drive. However I get an invalid operating system error at boot. Any ideas why this would not work?
I am still learning how the entire boot process works too and I though that as long as I had the /boot directory with the kernel images and the grub config file I would be able to boot up the RAID system.

[noyzy]

tap... tap...
If this can't be answered, Can someone just refer me to a tutorial or explain what the best method is to read my soft array if my motherboard were to stuff up. As the hardware would be different my system would not boot. I can not find any tutorials that explain this although I thought they would be everywhere on the net.
Please any answer is better than none. I intended to have this project up and running by December.