After you install Windows 10 using the official ISO, you can verify the Kernel version to ensure you have the latest NT core.
"KernelOS" often refers to a community-modified, "debloated" version of Windows 10. These versions are popular with gamers because they strip out background processes to reduce latency and boost FPS. KernelOS.org
It is designed to run efficiently even on older hardware, often requiring as little as 10 GB of space. Where to Find the Link
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Unlike standard Windows, it often skips the "out-of-box experience" (language/region selection) and boots straight to a command prompt to run final optimization scripts. Important Considerations
Are you installing this on a or a Virtual Machine ?