Cannot boot from software RAID with 2TB disks

[Luis Paulo]

Allow me please (don't want to hijack the page) just to say that I
have been booting from a mdadm RAID 1 /boot partition for a long time
now

$ mount
 /dev/md0 on /boot type ext2 (rw)
$ cat /proc/mdstat
 md0 : active raid1 sda1[0] sdb1[1]
      160512 blocks [2/2] [UU]
$ df -h
 /dev/md0              147M   31M  109M  23% /boot

I'm now using grub2 1.97~beta4-1ubuntu5 on ubuntu 9.10, but it started
with grub, as you know.

You don't have to do nothing to have linux booting from the first raid
disk device.

Only if you want to allow recovery boot from the other disk devices,
you have to also install grub on them
I've follow mostly this page
http://tldp.org/HOWTO/Software-RAID-HOWTO-7.html#ss7.3

Also like this one about mdadm
http://www.sanitarium.net/golug/Linux_Software_RAID.html

Regards
Luis

PS: I'm confident it will also work on 10.4. I am. :)