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(Don’t forget to check for new versions of preference panes and other add-ons that run in the background.) Finally, as with any major software update or upgrade, you should be sure to back up before installing Snow Leopard. Let me also suggest that a major OS upgrade is the perfect chance toĬheck your drives for problems, clean house, and check for updates for your frequently used software. Similarly, if you’ve installed an aftermarket video card in your Mac, be sure to check with the card’s vendor to see if there are new Snow Leopard-compatible drivers you need to download and install. Before you begin installing, it’s also worth checking to see if your Mac requires any firmware updates Apple offers a While these are the official requirements, I recommend 2GB RAM and at least 10GB of free hard-drive space for a much better experience (both during installation and afterward). 5GB free hard-drive space (7GB if you plan to install the Snow Leopard developer tools).A built-in display or a display connected to your Mac’s stock video card.DVD drive (or Leopard’s Remote Disc feature).