OS X Snow Leopard had a magical and invisible PowerPC emulation application, called Rosetta, that worked seamlessly in the background that still allowed older PowerPC coded software to still operate in a Intel CPU Mac. If you run any older Mac software from the earlier PowerPC Macs, then none of this software will work with the newer OS X versions (10.7 and onward). OS X Mountain Lion, Lion, or Snow Leopard v10.6.8 already installedĢ GB or more of memory (I strongly advise, at least, 4 GBs of RAM or more) MacBook Pro (15-inch or 17-inch, Mid/Late 2007 or later) MacBook Pro (13-inch, Mid-2009 or later), MacBook (13-inch Aluminum, Late 2008), (13-inch, Early 2009 or later) OS X 10.8 Mountain Lion purchased emailed download code here. To install OS X 10.8 Mountain Lion, 10.9 Mavericks (free upgrade, but currently unavailable) or OS X 10.10 Yosemite (currently available free upgrade) you need one of these Macs: Mac OS X v10.6.6 or later to install via the Mac App Store (v10.6.8 recommended) To use OS X 10.7 Lion, make sure your computer has the following:Īn Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processor To install Snow Leopard for the first time, you must have a Mac with:Īn internal or external DVD drive, or DVD or CD SharingĪt least 1 GB of RAM (additional RAM is recommended)Ī built-in display or a display connected to an Apple-supplied video card supported by your computerĪt least 5 GB of disk space available, or 7 GB of disk space if you install the developer tools.

Mac OS X v10.6 Snow Leopard system requirements Then, determine if your Mac meets ALL minimum system install requirements. This step is really needed in case something goes wrong with the install of the new OS or you simply do not like the new OS, you have a very easy way/procedure to return your Mac to its former working state. Then, use either OS X Time Machine app to backup your entire system to the external drive OR purchase, install and use a data cloning app, like CarbonCop圜loner or SuperDuper, to make an exact and bootable copy (clone) of your entire Mac's internal hard drive. Before embarking on a major OS upgrade, it would be wise, advisable and very prudent if you backup your current system to an external connected and Mac formatted Flash drive OR externally connected USB, Thunderbolt or FireWire 800, Mac formatted hard drive.

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