The Apple Mac OS X 10.9 Mavericks is open for download for free. The new version of OS X supports any Mac that works with Mountain Lion and is already running OS X 10.6.8 or later. The list of compatible models is:
- iMac (Mid 2007 or newer)
- MacBook (Late 2008 Aluminum, or Early 2009 or newer)
- MacBook Air (Late 2008 or newer)
- MacBook Pro 13-inch (Mid-2009 or newer)
- MacBook Pro 15-inch (Mid/Late 2007 or newer)
- MacBook Pro 17-inch (Late 2007 or newer)
- Mac mini (Early 2009 or newer)
- Mac Pro (Early 2008 or newer)
- Xserve (Early 2009)
Before upgrading to the new system, it is highly recommended that you back up your Mac first. This insures that your important documents and data will be backed up in the unusual event that something goes wrong during the updating and installation process.
When you have your Mac ready for the upgrade, you can directly download Mavericks from the App Store:
The download itself weighs in around 5.3GB and arrives as a self-installer app in your /Applications/ directory. If you intend on installing Mavericks on other Macs without having to re-download it on each machine, you will want to copy that installer outside of /Applications/ before attempting the installation, otherwise the self-installer will remove itself upon completion.
OS X Mavericks has over 200 features and improvements, ranging from revised power management and memory efficiency, to Finder tabs, Maps, iBooks, Finder tagging, iCloud Keychain, improved multi-monitor support, and much more.