for the installer alone, and highly compressing it down to 100MB is technically impossible without removing critical system files that make the OS non-functional. Why You Should Avoid "100MB" Versions
If you truly need a smaller Windows 8 footprint, there are legitimate methods that shrink the OS—but to ~800 MB–2 GB, not 100 MB. Windows 8 Highly Compressed 100mb
| Tool | Method | Resulting Size | |------|--------|----------------| | | Remove packages, languages, drivers | 30-50% reduction | | NTLite (paid software) | Customize and strip components safely | Down to 1.5 GB ISO | | Windows 8 Embedded Industry Pro | Modular Windows version designed for thin clients | Base install ~2 GB | for the installer alone, and highly compressing it