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 worked, recognised all my drives. I reinstalled Norton and then realised that Windows is no longer recognising my second hard disk (previously labelled G. The C: drive and several USB drives are all fine. When I go into the Disk Managment section of Computer Management, all my drives are present and healthy. The missing disk shows up but with no drive letter. However when I right click, it will not allow me to Open, Explore or Change Drives/Paths/letters for the disk, but will allow be to do so for all the others, which already have a letter assigned.


I suspect this is a problem with the Registry.

Can anyone help??????

Is there any data on this drive? If not (or if nothing of importance) I would try formatting it.

Is that option available in Disk Management?

Also if you are not using the Main (built-in) Administrator account you might try working from there to fix this problem.