Please help. It appears that my new XP Pro SP2 installation (ALL patches and updates applied) has a 'broken' disk management service. I have spent 2 days trawling forums before posing this. I use Daemon Tools 4 and 1 USB flash drive. I am at the point where XP refuses to assign drive letters to ANY new device, be it physical or virtual. Even with DT uninstalled and all its .sys files and registry entries thoroughly removed, the problem remains. It's almost as if the drive letter assignment has been 'locked'. The Disc Management can 'see' the devices - but the drive letter assignment will not work. Even manual assignment will not work. So in summary. USB flash drive detected but not assigned a drive letter. Manual assignment refused. New install of Daemon Tools (creating 1 virtual drive by default) installs ok, detected virtual drive ok. Drive assignment refused. There are no mapped network drives and there never have been. It seems that there are many users out there on the forums of the world with a similar, if not identical problem. Many have arrived at the conclusion that it's just a windows bug and we have to live with it or re-install. As for re-install, I have a custom XP disc (nlite) which oddly will not give me that facility (even though I kept the option to have it in my iso as per the installation app). So this currently is not an option for me (after spending all weekend doing a BIG install). If I can get an answer to this, then I will be visiting many forums to spread the good news. Any thoughts would be most welcome. Thanks, Dan.