You should be able to use HDToolBox to prep the new drive.
Just add the new HD to the SCSI chain (make sure it has a unique ID). Boot with your existing HD, change or add the HDToolBox tooltype 'SCSI_DEVICE_NAME=IVS_SCSIpro.device' (without quotes, and case sensitive), then run HDToolBox. You should then see the new HD, and be able to install and partition it. Make sure you set a partition as bootable. Reboot and quick format the new partitions, then copy everything from your old Sys: over to the new boot partition.
