A major feature that debuted in Lion (OS X 10.7) and continues in Mountain Lion (OS X 10.8) is one I hope you’ll never need to use: recovery mode, officially called OS X Recovery. (It was called Lion ...

Like Lion (OS X 10.7) before it, Mountain Lion (OS X 10.8) doesn’t ship on a disc—it’s available only as an installer app downloadable from the Mac App Store ...

The error message "Volume does not meet requirements for this update" may appear when attempting to install a Mac OS X updater or a full release from disc. Generally ...

Complete the El Capitan install in a few easy steps This article explains how to perform a clean install of OS X El Capitan on your Mac's startup drive or another drive. It includes information on the ...

(Note: This guide is adapted from one I found buried in Google's cache, so I thought Ars might appreciate a more accessible, updated version.)<br><br><b>Introduction</b><br><br>We all know that OS X ...