Forum Discussion
Robocopy Command Line Interface (CLI)
```bat
C:\Windows\System32>robocopy D:\Intel\ C:\Robotest\ /E /L
Result: no errors
C:\Windows\System32>robocopy D:\Intel\ C:\Robotest\ /E /L /COPYALL
Result: no errors
Exploring the content in the D drive:
C:\Windows\System32>robocopy D:\____________Backup\Home C:\Robotest\ /E /L /COPYALL
-------------------------------------------------------------------------------
ROBOCOPY :: Robust File Copy for Windows
-------------------------------------------------------------------------------
Started : Monday, August 7, 2023 12:13:08 PM
Source - D:\____________Backup\
Dest - C:\Windows\System32\Items\Home\
Files :
Options : /DCOPY:DA /COPY:DAT /R:1000000 /W:30
------------------------------------------------------------------------------
ERROR : Invalid Parameter #3 : "C:\Robotest"
Usage Example: ROBOCOPY source destination /MIR
source :: Source Directory (drive:\path or \\server\share\path).
destination :: Destination Dir (drive:\path or \\server\share\path).
/MIR :: Mirrors an entire directory tree.
For more usage information, run ROBOCOPY /?
*Note: /MIR can DELETE files in addition to copying them!*
C:\Windows\System32>
Q: Why is robocopy not accepting the destination directory, "C:\Robotest", as it did before? What could be the solution?
```