If you're looking to download Mac OS X Mountain Lion, you'll need at least OS X Snow Leopard, Lion 10.7, or Mountain Lion 10.8. You'll also need 2GB memory, and 8GB data storage.

Infinite Mac won't run later releases of classic Mac OS (including 8.5, 8.6, and 9) because those releases ran exclusively on PowerPC Macs, dropping support for the old Motorola 68000-based ...