The chip for decoding the disks might be embedded in the DVD drive itself. I know this DVD drive is manufactored by LG/Hitachi
You could take out the SATA cable plug a PC SATA cable in the drive then plug in your PC see if it detects it and trying reading a xbox 360 disc through the PC using the xbox 360 drive?
If this doesnt work it would rule out the security chip being embedded into the DVD drive.
Has anyone pluged the HDD in via SATA?
I like the idea, but you'd have to write your own driver for it ...