Check compatibility
You can upgrade to OS Yosemite on any of the following Mac models. Your Mac also needs at least 2GB of memory and 8GB of available storage space.
MacBook introduced in 2009 or later, plus MacBook (13-inch, Aluminum, Late 2008)
MacBook Air introduced in late 2008 or later
MacBook Pro introduced in mid 2007 or later
Mac mini introduced in early 2009 or later
iMac introduced in mid 2007 or later
Mac Pro introduced in early 2008 or later
Xserve models introduced in early 2009
MacBook Air introduced in late 2008 or later
MacBook Pro introduced in mid 2007 or later
Mac mini introduced in early 2009 or later
iMac introduced in mid 2007 or later
Mac Pro introduced in early 2008 or later
Xserve models introduced in early 2009
To find your Mac model, memory, storage space, and macOS version, choose About This Mac from the Apple menu . If your Mac isn't compatible with OS X Yosemite, the installer will let you know.
Make a backup
Before installing any upgrade, it’s a good idea to back up your Mac. Time Machine makes it simple, and other backup methods are also available. Learn how to back up your Mac.
Boson Graphical Neural Network A 128-bit Neural Network Graphics and Physics Engine for Mac OS X 10.10. Built with Metal and Swift. Must be a registered Mac Developer with Yosemite installed. Required to build: Quartz Composer, Nvidia CUDA SDK, Max 6.1 or Max 7, Swift Compiler and Metal Compilers. Written by Eli Hutton in 2014. Download Mozilla Firefox, a free Web browser. Firefox is created by a global non-profit dedicated to putting individuals in control online. Get Firefox for Windows, macOS, Linux, Android and iOS today! Safari's new tab view on OS X 10.10 Yosemite. Jason Cipriani/CNET Safari 8.0 brings a new flat look, speed and performance improvements under the hood for Yosemite, as well as a new feature I. Compatible with OS X 10.9 and OS X 10.10 Yosemite.paste from Safari preserves formatting. IPurge Safari Caches. OS X 10.4, 10.5, 10.6 / PowerPC and Intel Mac - Safari. OS X Lion Server Update for Mac mini Free. Enhance the compatibility and the stability of your Mac.
Get connected
It takes time to download and install OS X, so make sure that you have a reliable Internet connection. If you're using a Mac notebook computer, plug it into AC power.
Download OS X Yosemite
For the strongest security and latest features, find out whether you can upgrade to macOS Catalina, the latest version of macOS.
If you still need OS X Yosemite, use this link: Download OS X Yosemite. A file named InstallMacOSX.dmg will download to your Mac.
Install the macOS installer
Double-click the downloaded file to open a window showing its contents. Then double-click the file within, named InstallMacOSX.pkg.
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Follow the onscreen instructions, which will guide you through the steps necessary to install.
Begin installation
After installation of the installer is complete, open the Applications folder on your Mac, then double-click the file named Install OS X Yosemite.
Click Continue and follow the onscreen instructions. You might find it easiest to begin installation in the evening so that it can complete overnight, if needed.
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Allow installation to complete
Mac Yosemite Download
Please allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart, show a progress bar, or show a blank screen several times as it installs both OS X and related updates to your Mac firmware.
![Safari For Mac Yosemite Safari For Mac Yosemite](/uploads/1/3/4/8/134842930/138026996.jpg)
Learn more
- OS X Yosemite won't install on top of a later version of macOS, but you can erase your disk first or install on another disk.
- You can use macOS Recovery to reinstall macOS.
Safari for Mac
Safari is included with your Mac operating system.
![Safari macos yosemite Safari macos yosemite](/uploads/1/3/4/8/134842930/635989485.jpg)
Updating Safari
To keep Safari up to date for the version of macOS you're using, install the latest macOS updates.
The most recent version of macOS includes the most recent version of Safari. For some earlier versions of macOS, Safari might also be available separately from the Updates tab of the App Store.
Reinstalling Safari
If you deleted Safari and don't have a Time Machine backup or other backup, reinstall macOS to put Safari back in your Applications folder. Reinstalling macOS doesn't remove data from your computer.
Before reinstalling, you might want to use Spotlight to search for Safari on your Mac. If you find it, but it's no longer in your Dock, just drag it to the Dock to add it back.
Safari for Windows
Apple no longer offers Safari updates for Windows. Safari 5.1.7 for Windows was the last version made for Windows, and it is now outdated.