Upgrade Install Shows Working NTFS Partition Now As RAW

I upgraded my motherboard, like I've done many times before. In order for my
existing OS to recognize the new mobo, I start the upgrade installation of
XP, replace the hardware then boot and let the install do its thing. I've
done this several times with upgraded motherboards and never had a
problem...until now.

I boot the system and let the install do its thing. It eventually asks me
for a driver location for an item. When I went to navigate to my D drive, it
showed the drive icon with a white question mark in a red circle. I have
never seen this before. I happent to right-click and noticed Properties is
available. Checking shows the File System as RAW and all size values at 0s.

The drive is IDE configured with 2 basic partitions: 1) Active primary
partition is 20G as drive C and 2) primary partition as remainder of space
~210G as drive D.

I pulled the drive and stuck it in an external USB enclosure to make sure
it's still okay and nothing happened during the upgrade process. I connected
it to my other system and it can see it just fine. Note that all my
computers are running Windows XP Pro with Sp3.

I have a backup of everything, so I decided to delete the partition and
recreate it and reformat it (not quick format either) using the default
values. I then took the drive back to the PC with the new mobo and plugged
it in. Rebooted and the setup resumed. Basically the same thing happened as
noted in the 2nd paragraph above.

I really have no idea what the heck is up at this point. I can't do
anything on the system with the new mobo because I'm stuck in the upgrade
which I have to do because of the new board. I'm really hoping someone has
an idea of what to do. Help!