Mac OS X 10.7 was first shown to the public in October 2010. The presentation was understated, especially compared to the bold rhetoric that accompanied the launches of the iPhone ("Apple ...

Mac OS X is now 20 years old, and the operating system that once seemed like it was from 20 years in the future is more relevant now than ever before.

Apple has added a new option in Mac OS X 10.7 Lion to simplify the process of switching from a Windows PC to a Mac via network import of old files.

Released in 2011 and 2012, OS X Lion and Mountain Lion were the last paid software updates for the Mac. Now you can download them for free.

So if you create a bootable Lion-installer drive using the current version of the Lion installer—which, as of 2/10/2012, installs OS X 10.7.3—that drive will work with all current Lion-capable ...

You can still buy Mac OS X lion and Mac OS X Mountain Lion from the Apple store for approximately $20 each, but they've also been made available for free through Apple support documents.

Need to install an old version of macOS on your Mac? Here's how to downgrade from a new macOS version to an older one.

Jesus Vigo goes over the steps to create a bootable USB to install OS X 10.7-10.8 and OS X 10.5-10.6, as well as how to put multiple versions on the same USB.

Second bite at the apple Enter OS X 10.8 Mountain Lion. Apple made a half-hearted attempt to brand 10.7 as "OS X Lion," but the "Mac" prefix was far from completely expunged at launch.

Apple recently dropped the $19.99 fee for OS X Lion and Mountain Lion, making the older Mac updates free to download, reports Macworld. Apple ...

Users on Mac OS X 10.7 Lion who attempt to run a PowerPC application will get the alert shown above. Thanks, anonymous Add 9to5Mac to your Google News feed.

Serlet, whom many have called ‘the father of Mac OS X,’ has worked alongside Apple’s Chief Executive Steve Jobs for more than two decades at both Apple and NeXT, the short-lived computer ...