It boots to the dreaded “?” icon flashing in the center of the grey screen. So, I booted to the boot selection screen, and it only showed options for a network boot and the optical drive. I booted from the installation DVD, and Startup Disk couldn’t find the Hard Drive at all. Disk Utility could, and the partition tables and filesystem check out fine. So, I nuked the partition table, rebooted, and checked to make sure it was gone. Now I’m repartitioning and zeroing the drive.