Disk Space Reporting Does Not Include Junction Point Targets

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: This 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.

Example

Drive 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.