Mirroring Disks with Intel ICH5-R SATA 82081ER

[Derek Giromini]

Greetings--

I preface this with an admission this is my first ever attempt to
successfully install FreeBSD. I am attempting to install 5.4 on a 1U
with an Intel ICH5-R SATA RAID controller for the purpose of running
mirrored disks.

I've dug up a recent exchange about RAID-1 (mirror):

> Should work just fine with the integrated ICH5R if you CVSUP to 
> -CURRENT. sos@ has done major work to the ata code recently and I have 
> many of this exact machine up and running right now. I had to:
> 
> Enable SATA RAID  in the BIOS but define no raid
> Install FreeBSD on ad4 (or the first disk)
> CVSUP to current and rebuild kernel
> edit your fstab and change all the ad4 (or whatever disk you installed 
> on) entries to ar0
> go into RAID BIOS and create a RAID from the first drive
> 
> When it asks you how to create the array, choose Build and it'll copy 
> your first drive to the second drive, creating a mirror.
> 
> reboot your machine and it should 'just work'
>    -Sam

I couldn't determine which version of FreeBSD was discussed, so I just
modified the fstab and RAID, but I could never get the disk to boot. I
reinstalled, then cvsup all CURRENT code only to break the kernel
rebuild as the headers were out of whack.

Is there some way a could rebuild the kernel without taking everything
CURRENT since 5.4? Perhaps I am not getting the code correctly or am
not building the kernel correctly. I am following the documentation
online.

Any help would be greatly appreciated.

Cheers
--Derek