FBConan, the developer behind Windows X-Lite and Phoenix LiteOS, has been refining custom Windows ISOs since the Windows XP era. The goal is to provide a clean, fast experience that the developer personally uses, ensuring it is safe and stable for everyday hardware. Key Features of Optimum 11 Home v4 Minimal Footprint : The ISO is approximately , and the installed OS occupies only about of disk space. Performance Tuning

: Bypasses strict Microsoft requirements like TPM 2.0 and Secure Boot , allowing it to run on older Intel Core 2 Duo or Atom-based systems with as little as 2GB–4GB of RAM. Critical Considerations and Risks

: A fresh installation takes up roughly 5.5 GB of disk space, compared to the 11–12 GB required by the official Microsoft version.