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Windows 2000 supports the use of Directory Junction points and Volume Mount Points to graft the namespaces of other volumes under folders contained on NTFS-formatted partitions. You can use this functionality to gain access to and store data on alternate volumes without having to address them using a separate drive letter.
Windows Explorer, along with tools such as Chkdsk.exe, do not traverse NTFS Junction/Mount points, but instead show real statistics associated with the actual physical volume.
To acquire real statistics about available and total disk space associated with a given namespace (such as C:) that contains Junction/Mount points, list the directory for the root of the host drive. For example:
dir c:\ /sThis command traverses the Junction/Mount points and provides accurate statistics for the drive C namespace.
For Volume Mount points, you can also right-click the folder hosting the alternate volume, click Properties to reveal the statistics for the mounted volume, then add it to the statistics of the host volume.
ExampleDrive C is a 2-gigabyte (GB) drive and shows 500 megabytes (MB) free in Windows Explorer. C:\Volume2 is a Volume Mount Point to another 1-GB drive that has 800 MB free space.
The properties of the C:\Volume2 folder reveal the statistics of the underlying Volume of 1 GB total space with 800 MB free space which you can add to the statistics of drive C.
The "dir C:\ /s" command shows 3 GB total space with 1.3 GB free.