Mac Os X Yosemite Server App

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

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.

Jan 24, 2018  OS X Server 4.0 Developer Preview OS X Server 4.0 Developer Preview 14S323 (app version 3.5.9) is now available for testing. This version is designed for OS X Yosemite. Oct 16, 2014  The newest version of OS X runs on all Macs that are capable of running Mavericks, if you haven’t done so yet, you can prepare your Mac for the Yosemite update by following a few simple tasks, including updating your software and backing up the computer before installing the free update. OS X Yosemite is available as a free download from the Mac App Store.

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

Mac

Mac Os X 10.10 Installer

Double-click the downloaded file to open a window showing its contents. Then double-click the file within, named InstallMacOSX.pkg.

Follow the onscreen instructions, which will guide you through the steps necessary to install.

Mac Os X Yosemite Dmg

Begin installation

Mac Os X Yosemite Upgrade

After installation of the installer is complete, open the Applications folder on your Mac, then double-click the file named Install OS X Yosemite.

Mac Os X Yosemite Wallpaper

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.

Free

Allow installation to complete

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.

Mac Os X Yosemite Server Apps

Learn more

Mac Os X Yosemite Installer

  • 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.