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Microsoft Resource Kits - Windows 2003 Resource Kit

Linkd.exe  (Windows 2003 Resource Kit)

The Window Server 2003 Resource Kit is a set of tools that system administrators and engineers use to manage or support a Windows Server 2003 system. Use it to streamline management tasks such as troubleshooting operating system issues, managing Active Directory, configuring networking and security features, and automating application deployment.
Linkd.exe
This command-line tool links an NTFS directory to a target object. LinkD grafts the target name directly into the name space at the specified source directory, so that the source directory subsequently acts as a name-space junction. A junction acts as a surrogate, standing in for the target object in the directory tree. The source directory must reside on a drive formatted with NTFS 5.0. The destination or target of the link can be any valid Microsoft® Windows® 2000 directory name, device name, or object name. When the target name does not resolve to a directory or a device, open calls fail.