Windows 8 Highly Compressed Here

You can still right-click folders/drives, select "Properties" -> "Advanced," and enable "Compress contents to save disk space," though WIMBoot is more advanced, system-level compression.

) to disable unnecessary programs from launching when you turn on your PC.

: Run the built-in Disk Cleanup tool regularly to remove temporary system files. Critical Safety Warning

: Restart your PC and enter the BIOS/Boot Menu (usually by tapping F2, F12, or Del) to select the USB as the primary boot device.

The term "highly compressed" in the context of Windows 8 refers to two distinct but related processes. The first is , where the installation media (ISO) is shrunk using advanced algorithms like ESD (Electronic Software Download) or LZMS compression. The second, and more radical, is system slimming . This involves removing non-essential components—such as Windows Media Player, telemetry services, and pre-installed "bloatware"—before the compression even begins.

One of the most crucial technologies behind these tiny images is compression. This high-density file format achieves significantly better compression ratios than the older WIM (Windows Imaging Format) used by default. By converting an image from WIM to ESD, creators can dramatically shrink the installation file, achieving the 1 GB sizes seen in many builds. The Windows Setup process can then decompress this ESD file during installation.