Let’s break down the reality of that 500MB target, what actually fits in that space, and how to legally get a tiny Windows environment. A standard, untouched Windows 10 22H2 ISO (the latest version as of this writing) weighs in at roughly 4.5GB to 5.8GB depending on the edition (Home/Pro) and architecture (32-bit vs. 64-bit).

Save yourself the headache. Use the official Media Creation Tool (downloads ~5GB) or switch to a lightweight Linux distro if your hardware is that constrained. Have you ever tried running a "slimmed down" Windows? Share your horror stories (or success stories) in the comments below.

That means a 500MB ISO would be than the official release.