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 ...

Apple only sells OS X Mountain Lion as a digital download in the Mac App Store. The installer weighs in at a hefty 4.05GB, but the good news is that you can install your copy of Mountain Lion on all ...

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 ...

If you have a spare hard drive lying around, you could use the existing recovery partition to install the OS on to that, even if just temporarily. If you have a friend with a Mac, he could download ...

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 ...

(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 ...

Some people have been in situations where they would like to repair their hard drives and permissions on systems that they do not have an installation disk for, but do have access to install disks for ...

This article is for people whose Macs came preinstalled with Mavericks. If you can download the Mavericks installer from the Mac App Store, you should instead use our standard instructions for ...