If it cannot find it, it will ask you to input the serial number of the product being upgraded. If you are installing as an upgrade, the installer will check your system to find the valid upgrade product.If you downloaded the software from the web, open the folder, navigate to the application folder, double-click Setup, and then follow the on-screen instructions.
If the installer does not launch automatically, navigate to the application folder found at the root level on your disk and double-click Setup Mac OS to start the installation process.
Some GPU-accelerated features require graphics support for Shader Model 3.0 and OpenGL 2.0.7.7GB of available hard-disk space for installation additional free space required during installation (cannot install on flash-based storage devices).MS Hot Fix KB-930627: is required for Microsoft Windows XP Home, Professional, or Tablet PC Edition with Service Pack 2 (64-bit) Windows Server 2003 (with Service Pack 2 for 64-bit) or Windows Vista Home Basic, Home Premium, Business, Ultimate, or Enterprise without Service Pack 1 (64-bit).