FreeBSD 5.3 installation problems on EM64T

[Vinod Kashyap]

I am trying to install FreeBSD 5.3 for amd64/EM64T on a
3ware 9xxx controller, plugged into a Supermicro X6DH8-G
motherboard with a single Intel Nocona 800 MHz processor
(with EM64T support).

Once I boot off the CD (with ACPI disabled -- the system hangs
if ACPI is enabled), sysinstall runs fine (the 3ware controller
and all its connected devices are detected, and I can do fdisk
and disklabel; the CD drive is detected too), until it's time to start
copying files from the CD.  After the initial "Starting an emergency
holographic shell" message, I see the following error:
"The disc in your drive looks more like an Audio disc than a FreeBSD release."

I have created the installation CD just like I created all my previous
ones that worked (downloading the ISO from ftp.freebsd.org and then
burning it using Nero).  The md5 of the ISO image checks ok.  I tried
burning the CD on 2 different machines, with the same result.  I tried
using 2 different CD drives (TSST CDW/DVD TS-H492A/TB02,
Sony CD-ROM CDU4821/S0.Q) and it made no difference.

On Alt-F2, I see the following:
DEBUG: Notify: Copying the boot floppy to /stand on root filesystem
/mnt/stand
/mnt/stand/etc
...
...
...
/mnt/etc/services
/mnt/etc/group
23 blocks
DEBUG: Generating /etc/fstab file

Does anyone know what's going on here?


Thanks,

Vinod.