How to Perform a Clean Install of Snow Leopard

Snow Leopard OS X 10.6 was the earliest version that allowed access to the Mac App store. It was the only way for anyone with an old Mac to upgrade to newer Mac operating systems. This process involves three steps:

Boot from the Snow Leopard Install DVD.Erase the hard drive.Install Snow Leopard on the erased hard drive.

Boot From the Snow Leopard Install DVD

Here’s how to boot from the Snow Leopard install DVD:

Erase the Hard Drive

For this step, you’ll use Disk Utility from the Snow Leopard installer. Here’s how:

Complete the Snow Leopard Installation

To complete the installation, follow the Snow Leopard basic install instructions. You now have a clean installation of Snow Leopard using a method that mimics the Erase and Install option available in previous versions of OS X.

Access the Mac App Store

The Mac App store was not part of the original version of Snow Leopard but was added in OS X 10.6.6. To access the store, you might need to update your system software. Select Software Update from the Apple menu.