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Mac Operating Systems

Learn more about Macintosh operating system features and get the best from your OS.
  1. OS X Mavericks (8)
  2. OS X Mountain Lion (8)
  3. Lion Server (6)
  4. Lion - Mac OS X 10.7 (21)
  5. Snow Leopard Mac OS X 10.6 (13)
  6. Leopard - Mac OS X 10.5 (9)
  7. Tiger - 10.4 (4)

Getting Your Mac Ready for OS X Mavericks
Make sure your Mac is ready to upgrade to OS X Mavericks.

OS X History - A Guide to How We Got Here
A look at the development history of OS X.

Add a Menu Bar Item to Eject a CD or DVD
Add an Eject CD or DVD item to your Mac’s menu bar for a handy and always available way to open or close your Mac’s CD or DVD drive.

Dock Menus – Use Dock Menus to Manage Applications
Dock menus allow you to use the Dock to control active applications.

Remove Unused Applications From the Dock
The Dock, which acts as an application launcher, comes pre-populated with Apple applications. It's easy to remove any that are just taking up space.

Keyboard Shortcuts for Finder Windows
You can use keyboard shortcuts to quickly execute the most often used Finder navigation commands.

Mac OS X Startup Keyboard Shortcuts
These startup keyboard shortcuts come in handy if you need to troubleshoot your Mac, or you just want to boot from a different volume than usual.

Eject a CD or DVD
There are several ways to eject a CD or DVD from a Mac, including dragging its icon to the Trash, and using the right-click pop-up menu.

Add Your Favorite Applications to the Dock
The OS X Dock, which serves as an application launcher, comes pre-populated with many Apple applications. You can also add your own favorite apps to the Dock.

Mac App Store Part of Mac OS X Lion
Mac App Store Included in OS X Lion: The Mac App Store is already available in the latest edition of OS X Snow Leopard. You can actually think of the Snow Leopard version of the Mac App Store as a preview. Sure, it works fine, makes it easy to buy software, and provides a one-step download and installation process, but with Lion, the Mac App...

Configuring Messages
Using Messages Beta for Mac is slightly different than using iChat. This guide will take you through the process of creating a Messages account and the basics of using Messages.

Create a Bootable Version of the OS X Mavericks Installer on a USB Flash Drive
This guide will show you how to make a bootable copy of the OS X Mavericks installer on a USB flash drive. A physical backup of the installer is a smart thing to have, because it can be very useful.

OS X Lion Installation Guides
OS X Lion installation guides to creating bootable copies of Lion, and upgrade and clean installs.

Remove Unused Applications From the Dock
The Dock, which acts as an application launcher, comes pre-populated with Apple applications. It's easy to remove any that are just taking up space.

How to Perform an Upgrade Install of OS X Mavericks
Our guide to upgrading to OS X Mavericks will take you through the installation process from start to finish.

Add Your Favorite Applications to the Dock
The OS X Dock, which serves as an application launcher, comes pre-populated with many Apple applications. You can also add your own favorite apps to the Dock.

Understanding Compressed Memory in OS X
Memory compression is part of OS X's memory management system. Compression promises to let your Mac do more with less RAM. In this article, we explain how memory compression works.

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