As I understood it, windows machines could not recognize the hitachi drives like they could the samsung, but since there is a working boot off of the dvd drive, linux running on the xbox must recognize the drive. AFAIK the ability to read the xbox file structure on game dvds is dependent on a drive with the right firmware, (MS, xtreme or Kreon) I'm aware its not likely possible yet to do such things as extracting security sectors, and all the behind the scenes stuff built into XBC and the like, under linux, but I imagine it isn't too far of a stretch to think that if we can mount the drive with a game inside and dd the contents to some other machine, it won't be too long before the tools to patch images with SS are built. I could be wrong however, and the reason the hitachi drives aren't usable for backing up discs is because they require some sort of confirmation that the machine they are operating for is an actual xbox, and linux would need some sort of special permission to have access to contents of a game disc. (is this what you mean by "submit" the right challenge response?)
Anyone who can clear this up a bit more for me?