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.
The Mac App Store makes it easy to find and download Mac apps as well as widgets and extensions — like editing extensions for the new Photos app. You can browse Mac apps by category, such as games, productivity, music and more. Or do a quick search for something specific. Read descriptions and customer reviews. Flip through screenshots. Oct 16, 2014 Update by Konrad Krawczyk 10/16/14 1:31 p.m. ET: Apple has just launched Mac OS X Yosemite to the world.You can get it starting today. Just head over to the Mac.
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
Sep 28, 2018 Smart card authentication provides strong two-factor authentication in macOS Sierra and later. MacOS High Sierra 10.13.2 and later support smart card-only authentication for the mandatory use of a smart card, which disables all password-based authentication. Oct 20, 2014 Using PIV smart cards for HHS VPN login with Mac OS X 10.10 Yosemite. Note: This entire post is basically google search bait designed to (hopefully) allow others struggling with the same issues to save a bit of time. Hope it helps! October 30, 2014 Update. There is an active Citrix support thread on the “no valid certificates found” issue. Oct 10, 2019 The Mac OS X series is one of the best line up series of the operating systems. The tenth edition in the series is the Mac OS X Yosemite. The biggest and most advantageous part of the Mac OS X series is that the versatility of the operating systems in making the user is more comfortable in using the system is high compared to that of the other.
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.
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.
Apple Mac Os Yosemite Download
If you still need OS X Yosemite, use this link: Download OS X Yosemite. A file named InstallMacOSX.dmg will download to your Mac.
Apple Mac Os X Yosemite
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.
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.
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.
Learn more
Smart Card For Apple Mac Os X Yosemite
- 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.