Once installed, use open-source, community-vetted debloating scripts (such as Chris Titus Tech's Windows Utility) to safely remove telemetry, disable startup apps, and turn off unnecessary background services.
If you are looking for a high-performance, low-space version of Windows, these are the most reputable projects: Project Approx. Size ~2GB - 2.5GB The most famous "stripped" version for very old PCs. AtlasOS N/A (Script) windows 10 500mb iso top
Extreme stripping can lead to unexpected crashes. Best Use Cases for 500MB Windows 10 disable startup apps
: An "ultra-light" version optimized for gaming that removes bloatware but often retains the Microsoft Store. low-space version of Windows
Standard, unmodified retail installation files distributed directly via the Microsoft Windows 10 Download Page usually require 4 GB to 6 GB of storage space depending on the architecture.