Although you would typically use the Media Creation Tool to perform an in-place upgrade or a bootable USB flash drive to do a clean installation, it’s also possible to use the Windows image mounting capability to load the ISO file to launch the Windows 11 setup and continue with the installation. In this guide, you will learn the steps to perform an upgrade or clean installation of Windows 11 without a bootable USB or Media Creation Tool.

How to install Windows 11 from ISO without USB

To install Windows 11 without a USB flash drive, use these steps: If you want to perform a clean installation of Windows 11, click the Change what to keep option, select the Nothing option, click the Next button, and then click the Install button.

After you complete the steps, the upgrade process will begin and the computer will restart several times. After the installation, you may need to go through the out-of-box experience (OOBE) to finish configuring Windows 11. All content on this site is provided with no warranties, express or implied. Use any information at your own risk. Always backup of your device and files before making any changes. Privacy policy info.