Windows 7 - Create and empty file having a defined size

November 2016



To create an empty file, having a defined size under Windows 7
  • Click on Start > cmd > Press CTRL + Shift + Enter to open it as Administrator
  • Enter the following command
  • fsutil file createnew [name_of_file.extension][size_in_bytes]

  • By default the file will be generated in the system32 folder.


If you want to create the file on your desktop simply add "C:\Desktop" to your command:
  • E.g: fsutil file createnew C:\Desktop\test.png 6400000

Related :

This document entitled « Windows 7 - Create and empty file having a defined size » from CCM (ccm.net) is made available under the Creative Commons license. You can copy, modify copies of this page, under the conditions stipulated by the license, as this note appears clearly.