If you’re dusting off an old Mac to relive the glory days of OS X 10.6, you might be bracing yourself for a "Product Key" screen that never comes. Unlike the experience of installing Windows or modern subscription-based software, installing is a journey into a simpler era of digital trust. The Direct Answer: No Serial Required
: Follow the prompts. When it finishes, it will reboot into your new desktop—no activation screens or online registration "musts". Do I Need A Serial Number To Install Snow Leopard
Do you have the , or are you trying to create a bootable USB from a downloaded image? If you’re dusting off an old Mac to
: If you want a fresh start, use Disk Utility from the "Utilities" menu to erase your drive (format as Mac OS Extended Journaled ) before installing. When it finishes, it will reboot into your