So at present, Hijack is installed, and all 320GB (33527655 blocks, where each block is 1024-bytes) is visible at the lowest layers. But the upper filesystem layer says the filesystem was formatted as if the drive was some completely different size, indicating that perhaps Hijack was not present while the formatting was done.

Time to start over. First wipe the drive: serial port, hit control^C, and do this to "unformat" everthing:

dd if=/dev/zero of=/dev/hda bs=512 count=3000

Then do the bigdisk builder procedure (yes, Hijack is included), and then reinstall the car2-developer image with Hijack included.