How to get GRUB boot on software raid?

[Rashkae]

Shu Hung (Koala) wrote:
> Hello,
> 
> I've building a new /boot partition on a software raid 5.
> 
> I built a software raid (/dev/md0) on top of sda1, sdb1, sdc1 and sdd1 with
> mdadm.
> I did the mkfs job well. Then I mounted it on /mnt, copied all files from
> /boot to it, and unmounted.
> Everything is fine.
> 
> Now is my real problem:
> (1) I need to get my grub to boot with that /boot partition
> (2) I need to get fstab to mount it automatically
> 
> How could I do that?
> Please tell me. Thanks!

You cannot.  The best you can do with the boot partition is make it raid 1.