It sounds like you’re looking for information on Windows 8.1 highly compressed (600 MB) versions. These are not official Microsoft releases—genuine Windows 8.1 installation ISOs are typically 3–4 GB. A 600 MB file would be a heavily modified, “lite” or “custom” ISO, often shared on torrent sites or forums.
Communities to search (for educational use only): Windows 8.1 Highly Compressed 600mb
Then, he saw the golden ticket in the search results: "Windows 8.1 Highly Compressed 600MB." It sounds like you’re looking for information on
Bottom line: A 600MB "highly compressed" Windows 8.1 is almost certainly malware. Do not use it on any machine connected to the internet or containing personal data. 2 GB for 64-bit. Recommended Alternatives
Component Removal: Essential and non-essential features (like Windows Media Player, themes, drivers, and language packs) are stripped out to reduce the ISO size.
For comparison, a standard installation of Windows 8.1 requires significantly more space and memory than a "highly compressed" version claims to use: Disk Space: 16 GB for 32-bit; 20 GB for 64-bit. RAM: 1 GB for 32-bit; 2 GB for 64-bit. Recommended Alternatives