I had problems installing Diskeeper. Their website suggested that I uninstall Norton System Works, then install Diskeeper and reinstall Norton. I also had to change the permissions in the SOFTWARE section of the HKEY_LOCAL_MACHINE in the Registry to EVERYONE.
This worked initially and the Diskeeper program worked, recognised all my drives and I defragged. I reinstalled Norton and then realised that Windows was no longer recognising my second Internal Hard Disc (previously labelled G:). The C: drive and several USB drives are all fine. When I go into Disk Managment section of Computer Management (Windows XP), all my drives are present and healthy. My missing hard disc is also present but does not have a drive letter assigned. When I right click, it will not allow me to Open, Explore or Change Drives/Paths for this disk, whereas the the other internal C: and other External drives are fine.
I suspect this is a problem with the Registry.
Can anyone please help??????