Robocopy, for "Robust File Copy", is a command-line directory and/or file replication command for Microsoft Windows. Robocopy functionally replaces Xcopy, with more options

Example: 

Fastest and easy way to copy a large amount files and folder

Open the command prompt in ADMIN Mode and run the below command, make sure to use your own file paths.

Command:

robocopy c:\temp\source c:\temp\destination /MIR