How to clean install windows 11 without usb from Windows 10

To clean install Windows 11 without using a USB drive—such as upgrading directly from Windows 10—has some potential disadvantages:

• If not carefully backed up, you might accidentally delete important files during the partition formatting process.
• Upgrading directly from Windows 10 to Windows 11 without a fresh install may carry over some compatibility issues or residual settings that a clean install would typically resolve.
• Without booting from external media, you might have limited options to completely wipe and re-partition your drive, especially if Windows is running and you want to delete system partitions.
• In some cases, upgrading in-place can result in errors or failed installations if there are underlying issues with your current Windows 10 setup.
• Performing an in-place upgrade might take longer and be more prone to errors compared to a straightforward clean installation via bootable media.
• Running the installation process within Windows 10 could leave your system vulnerable if there are background processes or malware that interfere with the upgrade.

While upgrading directly from Windows 10 to Windows 11 without a USB can be more convenient, it may not be as thorough or clean as a fresh install.  Do a clean install Windows 11 generally offers better performance, fewer residual issues, and a more optimized system—especially if you back up your data beforehand.