I use a 8GB card for the internal slot on N800. I splitted the card into 2 even partition and cloned OS onto one partition. The other partition was formarted as Fat16 and can be used within the N800, but when I connect to PC, I got the message "unable to connect via USB...memory card in use:...internal memory card". If I unplug the USB cable, go back into File Manager, the internal memory is grayed out and cann't be used again untill reboot. What is the problem? my PC running win 2000 and can read 2GB external memory card fine.