NTFS volume mount points are specialized NTFS filesystem objects which are used to mount and provide an entry point to other volumes.
Description
NTFS volume mount points are NTFS filesystem objects—implemented as NTFS reparse points—which are used to mount and provide an entry point to other volumes. Volume mount points are supported from NTFS 3.0, which was introduced with Windows 2000.
Use
Mount points can be created in a directory on an NTFS file system, which gives a reference to the root directory of the mounted volume. Any empty directory can be converted to a mount point. The mounted volume is not limited to the NTFS filesystem but can be formatted with any file system supported by Microsoft Windows. However, though these are similar to POSIX mount points found in Unix and Unix-like systems, they only support local filesystems; on Windows Vista and later versions of Windows, NTFS symbolic links can be used to link local directories to remote SMB network paths.
Limitations
Symbolic links do not work during early boot, so it's impossible to redirect e.g.: \Windows \Windows\System32 \Windows\Config
Nevertheless, it is possible to redirect: \Users \Documents and Settings \Program Files \Program Files (x86)
