UPromote is the only software utility that can promote your NT server to an NT domain controller without re-installing the operating system. UPromote works by updating the system registry. To create a PDC it converts all local user accounts to global user accounts. To create a BDC it copies the user accounts from the PDC and then synchronizes the Security Identifier (SID) to match the PDC. To create a standalone server it converts all global user accounts to local user accounts. It does not modify any EXE or DLL files.
Images
Main Console
Key Features
Change standalone NT4 server to Primary Domain Controller
Change Primary Domain Controller to standalone NT4 server.
Change standalone NT4 server to Backup Domain Controller
Change Backup Domain Controller to a standalone NT4 server
Use UPromote twice to move BDC to different domain