If you receive an error message indicating that your Mac's firmware is out-of-date, and hence cannot accept installation of Mac OS X from a CD/DVD -- specifically ...

Apple has released Mavericks (OS X 10.9), but before you rush out and install the new OS, you’ll want to get your Mac ready for the upgrade. As with Mountain Lion (OS X 10.8) last year, and Lion (OS X ...

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 ...

Mac OS X Lion is easier to install than any previous version of Mac OS X. You don’t have to boot from a DVD or flash drive. Just download the Install Mac OS X Lion ...

Apple has released Mac OS X Lion in the Mac App Store for $30. Separately, Apple will also begin offering Lion on a USB thumb drive in Apple stores come August. Right now, you can grab Lion from 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 ...