This article presents a method to install Windows 11 alongside an existing system without relying on USB drives or optical discs by directly extracting the install.wim file into a new partition. The process bypasses traditional boot media and leverages built-in tools like DISM and BCDedit to create a dual-boot setup where the original OS remains accessible. By unpacking the Windows image to a dedicated NTFS partition (created via disk management or shrinking existing volumes), users can generate a bootable system that coexists with their current installation. The guide emphasizes critical steps such as selecting the correct image index for the desired edition, avoiding BitLocker encryption, and configuring boot entries to ensure the new OS is recognized during startup. While this approach offers a streamlined alternative to conventional installation methods, it raises intriguing questions about the boundaries of OS deployment: Can this technique be adapted for Linux or other operating ...--Qwen3