How to Copy Large Files in Windows FAST (Robocopy Command Guide)

How to Use Robocopy (Simple Steps)

1. Open Command Prompt as Admin

  • Press Win + X, then select Command Prompt (Admin).

2. Basic Robocopy Command

cmd

robocopy "C:\Source" "D:\Destination" /E /ZB /MT:16 /R:1 /W:1 /LOG:C:\CopyLog.txt
  • /E – Copies all subfolders (even empty ones).
  • /ZB – Uses restartable mode (better for large files).
  • /MT:16 – Uses 16 threads for ultra-fast copying.
  • /R:1 /W:1 – Retries only once with 1-second waits (saves time).
  • /LOG:... – Saves a detailed log of the transfer.

3. Advanced Robocopy Tricks (For Power Users)

A. Mirror a Folder (Delete Extra Files in Destination)

cmd

robocopy "C:\Source" "D:\Destination" /MIR /MT:24
  • /MIR – Makes destination identical to source (deletes extra files).

B. Copy Only New or Updated Files

cmd

robocopy "C:\Source" "D:\Destination" /XO /E
  • /XO – Excludes older files, only copies new/modified ones.

C. Copy with Verification (No Corrupt Files!)

cmd

robocopy "C:\Source" "D:\Destination" /E /V /MT:8
  • /V – Verifies each file after copying.

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