Mac OS is a series of graphical user interface-based operating systems developed by Apple Inc. for their Macintosh line of computer systems.

• Latest operating systems are available as free upgrades through the Apple App Store . Please use your Apple ID to download and install.
• 10.7 (Lion) disk image available from download link to the right
• 10.8 (Mountain Lion) available from download link to the right

• Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processor

• 2GB of memory

• OS X v10.6.6 or later (v10.6.8 recommended)

• 7GB of available space