I have a similar problem.
My computer xp pro sp2 is not recognising my Toshiba MK4025GAS hard drive.
when inserted, it says unknown device.
the same is working on every other computer. i dont know wats wrong with my computer.
ive tried everything like update driver, add hardware wizard, adding registry entry to usbstor etc. but no luck.
Earlier it used to work but now its not working.
i read here that drivers dont make hard disk work.
so wat should i do?
when i see driver details of hard disk in other's computer...it shows a file called disk.sys
i checked that even my pc has that file...
im struggling...please help