Make your folder size large using batch?

I have tried and succeded sometimes in this but What's the code to make your foldersize SOO large in seconds? I have tried this: (thicc.txt is a 9.34 GB .txt file)

set /p num=0
      set /p num+=1
      copy thicc.txt %num%.txt
      move %num%.txt (foldername)
      ping localhost -n 2 >nul
goto :while

(What it does is copy the large file to the folder's parent and rename it to numbers to avoid overwriting and move it to the folder with a delay)