# Mounting a Folder as a Drive in Windows You can use the `subst` command to mount a folder as a drive like so ```shell subst D: C:/D ``` If you place the command in a cmd file inside `C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp` it will run on startup. Note that the above stat-up technique does not make the drive available to system level services (think Arq backup). Attempts to solve this with a scheduler task have so far failed.