Interestingly enough windows xp does not support you having more then one partition on a usb thub drive.
Now this is not a physical limitation cause in linux i can have the 2 partitions and have them mounted at the same time.
In windows xp i only see the first one and disk management says there was an error in reading the second drive.
So as it would seem windows xp is unable to see more then one partition on a thumb drive and linux can. Whata shame