When Disk Administrator is run for the first time, it creates the key HKEY_LOCAL_MACHINE\SYSTEM\DISK . RAID and disk characteristics are stored in this subkey. If you have a RAID controller which supports extending the RAIDs volume size, the change will not be reflected in NT until you delete the DISK subkey and start Disk Administrator. At this point, since the DISK subkey does not exist, Disk Administrator will announce that this is the first time Disk Administrator has been run and it will recreate the DISK subtree with the updated characteristics.

Table of Contents
Meat and potatoes for NT workstation support.

You need the tools in the Resource Kit if you have workstation and its a MUST if you are supporting workstation.