If you are installing Windows on a portable computer, connect the power adapter.The keyboard and mouse or trackpad that came with your Mac.Select the Apple icon at the top left of your screen and click 'Software Update.'.To format an external drive as MS-DOS (FAT), use Disk Utility, located in the Other folder in Launchpad.You can download the support software to an external drive.Install support software that lets Windows work with your Mac hardware.An external drive, such as a USB thumb-drive, formatted as MS-DOS (FAT).An installation disc with Windows 7 x32/64, depending on your Mac model.A built-in disc drive or a compatible external optical drive.If they aren't available, use a USB keyboard and mouse. You will now download the Windows support software (drivers).

This software allows Windows 7 to communicate with your Mac hardware. In the table, find the model and production date of your mac and then select the number that corresponds with the Windows 7 column. An example image of the MacBook table is shown below.

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