Problem creating DR bootable disk

I'm running FreeBSD 6.1-RC #0 with a generic kernel and an
Asus A8V
motherboard. I have three IDE disks in my system. Two are on
a 3ware
7200 RAID card in a RAID1 configuration. This is currently
used to
boot.

The third disk is intended to be a DR disk, with a nightly
script to
mount, sync, change twed0 to ad0 in fstab, and unmount. If
something
untoward would happen to the main RAID, I could simply reset
the boot
list in the BIOS and boot off the DR disk that has an image
from early
that morning. This is also a handy way to
"shuffle" the OS onto larger
disks as I upgrade.

I was using this in 4.10 with an Asus a7v133 board and
fortunately
never had to utilize the DR capability. It did pass tests
for booting
off the new disk and I did several disk upgrade shuffles
over the
years.

For 4.10 the script I used to initialize the DR disk and add
boot
blocks was:

#!/bin/sh
dd if=/dev/zero of=/dev/ad0 bs=1k count=1
fdisk -BI ad0
disklabel -B -w -r ad0s1 auto
disklabel -R -r ad0s1 disklabel.250
disklabel -B -r ad0s1
newfs -U -i 20480 /dev/ad0s1a

This doesn't work with 6.0. When I try to boot off the
secondary disk
it gets through the initial loader and then spews what looks
like a
repeating register dump. Nothing short of a power cycle will
kill
it. I can't say exactly what it says since it's scrolling
too fast to
read.

Everything I've read indicates the procedure hasn't
changed in
6.0. Any suggestions on where to look or what to try?

Thanks for the help,

Joe
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Problem creating DR bootable disk

Thread: Problem creating DR bootable disk