Hi Chris,
Is there a reason you've chosen IDE instead of SCSI?
Recent versions of Mac OS don't get along well with virtual hard disks on our emulated PIIX4 IDE controller, which is why we default to SCSI disks when creating Mac OS VMs and adding hard disks to them. I'd strongly advise that you stick with SCSI virtual hard disks for Mac OS guests.
Cheers,
--
Darius