[CentOS] MIrrored drives won't boot after installation

I have a p4 motherboard with 2 ide interfaces, I connect 2 40 GB drives as hda and hdc, I install Centos 4 from a CDROM, and partition the drives as 2 x raid partition each plus a swap partition on hda, the make md0 and md1 to install /boot and / respectively. Install goes well, everything looks great, go to reboot from drives, and all I get is "grub" but no boot. I have tried this ten times, doesn't seem I can get around it.

I have to configure this server so that the drives are mirrored. I have installed redhat 9 in this configuration without problems.

What am I doing wrong?

Chris Mason

www.anguillaguide.com