Hi there. The reason it works in windows is because the 8100 has a plug and play kind of bios. As soon as windows has started it just controls everything in the laptop and therefore windows recognizes your drive, even though the toshiba bios does not. I have the same problem, and I'm also looking for the answer.
There are a lot of people on this forum claiming that soldering pin 45 and 47 together is the solution. I have not tried it yet but I will soon. Maybe then I will get rid of the error as well. :rolleyes: