@Spectrumbx: I was hoping that the clean install would see the drives once the hyper-v drivers were added, and realize that these drives were previously pooled drives, and give the option of attempting the rebuild of the pool.
I am familiar with what happens when you add drives to a pool, its just an issue of how a clean WHS install sees drives whose last state were as pool drives.
I am fairly certain that a clean install will have no information about the old pool.
However, it is cheap and easy to try. Do a clean install in a VM and see what you get.
Seriously, I would try the VMware P2V option I mentioned previously.
Use the VMware converter to create the image of the physical drive and then follow the link I posted in one of my earlier post to convert the image to an Hyper-V image.
Otherwise, have fun copying all those terabytes of data one drive at a time.