Sometimes installing OS X may result in odd behavior if the partition scheme on the drive is not set up properly. If you are experiencing problems, a simple repartition during setup may be an easy fix ...

[Editor’s note: This article is part of our series of articles on installing and upgrading to Lion (OS X 10.7). We also have a complete guide to installing and upgrading to Mountain Lion (OS X 10.8).] ...

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 ...

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 ...