1. Create a folder on any local drive
   Example
   (c:\Dropbox)
2. Hit the Windows or start button and choose Run:
3. Type: CMD to bring up a command prompt window
4. Load a command prompt and use the following :
   subst x: c:\Dropbox
   This will create what looks like a normal internal drive linking to that directory
5. Open Dropbox and Choose advanced installation. Choose the folder you’ve created (x:\)
   Finish Dropbox installation
6. Quit dropbox immediately after finishing installation
7. Return to command prompt and remove the virtual drive mapping with
   subst x: /d
8. Map the drive to your network drive/NAS.
   Open any windows window
   Press Map Network Drive
   Assign the Mapped Drive to X
   Choose the Network Drive Location you’d like Dropbox to sync to
9. Re-open Dropbox

 

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