How to Map a Folder to a Drive Letter in Windows

Method 1 of 2:

Thru Command Prompt

  1. How to Map a Folder to a Drive Letter in Windows Picture 1
    Open a command prompt window. On Windows Vista or Windows 7, open the command prompt as default user, not as Administrator. The reason will be explained later.
  2. How to Map a Folder to a Drive Letter in Windows Picture 2
    Use the SUBST command to map your folder to a drive letter. For example: SUBST X: "D:DocumentsJohnLetters".
  3. How to Map a Folder to a Drive Letter in Windows Picture 3
    To try it, open a windows explorer window. You should see a newly created drive letter X:, with which you can access your mapped folder directly.
  4. How to Map a Folder to a Drive Letter in Windows Picture 4
    To un-map the previously created drive letter, type SUBST X: /D
  5. How to Map a Folder to a Drive Letter in Windows Picture 5
    Note that when you reboot your computer, all mapped drive letters will be reset. To automatically map your folder when your system starts, put the SUBST command in a batch file, and put the batch file in your Autostart folder in the start menu. Advanced users can use the windows task scheduler, however this is not covered here.
  6. How to Map a Folder to a Drive Letter in Windows Picture 6
    Execute the SUBST command using the account that issued it. These mappings are only created for the user who originally issued the SUBST command. When you login as "John", and you open a command prompt as "Administrator" and execute the SUBST command, "John" will not be able to see any mapped drive letters because the mapping was created for "Administrator". This is why you need to open the command prompt as a default user in Windows Vista and Windows 7. When using the task scheduler, again make sure that the command is executed under the default user account.
Method 2 of 2:

Thru the My Computer button (Graphical Method on Windows)

  1. How to Map a Folder to a Drive Letter in Windows Picture 7
    Open My Computer from your Windows desktop.
  2. How to Map a Folder to a Drive Letter in Windows Picture 8
    Click Map Network Drive from the Tools menu.
  3. How to Map a Folder to a Drive Letter in Windows Picture 9
    Select a drive letter that you want to assign to the mapped folder in the Drive box. You will be able to rename this mapped drive to anything you want.
  4. How to Map a Folder to a Drive Letter in Windows Picture 10
    Type the server and share name of the computer or folder you want or Click Browse to find the computer or folder, in the Folder box.
  5. How to Map a Folder to a Drive Letter in Windows Picture 11
    Click the Finish button.
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