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 ...

If you receive an error message indicating that your Mac's firmware is out-of-date, and hence cannot accept installation of Mac OS X from a CD/DVD -- specifically ...

A reader sent us this tip for insuring that Mac OS X performs a clean install when applied to a volume which already contains a copy of the OS. Paul Christensen writes: "I accidentally replaced the ...

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 ...

It's easy to make boot disks on old Macs for older hardware, but as the years have gone on, it's gotten a little more difficult. Here's how to make classic Mac OS 9 and early Mac OS X boot media on ...

Before you fork over $30 for OS X Lion, be sure to check whether your apps and hardware will support Apple's new OS. Share on Facebook (opens in a new window) Share on X (opens in a new window) Share ...

It says that it's got a 1.5TB hard disk, when there are 3x 500GB drives physically installed. What I'd like to do is remove all but 1 functioning disks and re-install Mac OS X so that I have a ...

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 ...

Most of us face the prospect of upgrading our operating systems with a mixture of excitement and dread. True, a new OS brings cool new ways to work. But that doesn’t change the fact that when you ...