ARCHIVED: How and when would I want to use the DOS command subst?

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Use the subst command when you want to refer to a directory as a virtual drive. This command is available in DOS versions 3.1 and higher. The syntax is as follows, where x represents any letter (a through z) that you would like to name the substituting drive (this cannot be the default drive):

  subst [x:] [x:path] [/D]

Notes:

x: specifies the drive letter that you want to use as a substitute for a particular drive and path.
x:path specifies the drive letter and path that you want to refer to with the new drive name.
You can report any substituted drives by entering subst by itself.
/D deletes a substitution. You must also specify the drive letter of the drive whose substitution you want to delete.
- Entering this line would allow you to treat c:\temp as a drive name x:
```
  x: c:\temp
```
- Entering this line would allow you to delete the x: substitution:
```
  subst x: /D
```
Deleting this substitution will not delete or alter the contents of c:\temp in any way.