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You can upgrade to macOS Sierra from OS X Lion or later on any of the following Mac models. Your Mac also needs at least 2GB of memory and 8.8GB of available storage space.

Oct 22, 2017.

MacBook introduced in late 2009 or later
MacBook Air introduced in late 2010 or later
MacBook Pro introduced in mid 2010 or later
Mac mini introduced in mid 2010 or later
iMac introduced in late 2009 or later
Mac Pro introduced in mid 2010 or later

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 macOS Sierra, 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 macOS, so make sure that you have a reliable Internet connection. If you're using a Mac notebook computer, plug it into AC power.

Download macOS Sierra

For the strongest security and latest features, find out whether you can upgrade to macOS Catalina, the latest version of the Mac operating system.

If you still need macOS Sierra, use this link: Download macOS Sierra. A file named InstallOS.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 InstallOS.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 macOS Sierra.

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 macOS and related updates to your Mac firmware.

Learn more

  • If you have hardware or software that isn't compatible with macOS Sierra, you might be able to install the previous version, OS X El Capitan.
  • macOS Sierra 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.

On September 20, 2016, Apple announced that macOS Sierra , the latest major release of the world’s most advanced desktop operating system, is now available as a free update.

macOS Sierra brings Siri to the Mac with intelligent and helpful features users know and love from the iPhone and iPad, along with all-new capabilities designed specifically for use on the desktop.

Features like Universal Clipboard, iCloud Desktop and Documents, Auto Unlock and Apple Pay on the web help your Mac work even better with other Apple devices.

Photos gets an update with a new Memories feature that automatically creates curated collections of your favorite photos and videos.

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Siri on the Mac

can help send messages and email, find documents, look up information, search a user’s photo library, adjust system preferences and more. Users can also drag and drop Siri results into documents or pin them into their Today view for later reference.

Universal Clipboard allows users to copy content from an app on one Apple device and paste it into another app on a different Apple device.

With iCloud Desktop and Documents, users can now access the files on their Desktop from iPhone and iPad. And Auto Unlock lets users automatically log into their Mac when they are wearing an authenticated Apple Watch.

Apple Pay

on the web makes the online shopping experience in Safari more convenient and secure than ever.

Shoppers can now click the Apple Pay button at checkout on nearly 300,000 participating websites, including 1-800-Flowers, Gilt, Instacart, Lululemon, Warby Parker and more, and then complete their purchase with Touch ID on iPhone 6 or later or with Apple Watch.

User’s credit or debit card information is not shared with online merchants and strong encryption protects all communication between a user’s device and Apple Pay servers.

Photos

Photos introduces Memories, which highlights favorite and forgotten moments in users’ photo libraries by automatically creating curated collections of occasions like birthday parties or family vacations.

Photos uses advanced computer vision to identify faces, objects, and scenes in your images, so photos can be searched by who and what is in them. An all-new Brilliance editing tool brightens dark areas and pulls in highlights to make photos look richer and more vibrant.

Mac Sierra Iso Free Download

Messages

make conversations more interesting, allowing users to preview web links and play video clips from right within the app; respond to messages with a Tapback like a heart, thumbs up and more directly onto a message bubble, and send bigger emoji for more message impact.

Tabs

are now available across Mac apps that support multiple windows, including Maps, Mail, Pages, Numbers, Keynote, TextEdit, and even third-party apps.

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The picture in Picture floats video from Safari

or iTunes in a window over the desktop. The window can be resized, dragged and pinned to any corner of the screen so users can watch video while they work.

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Optimized Storage

frees up space when a Mac starts getting full by storing infrequently used items in the cloud and helping users remove apps and files they no longer need.

Apple Music

in iTunes makes it even easier to discover new music and browse exclusives and new releases.

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Mac Os Sierra Iso File

This is an official macOS Mojave Sierra from Apple, It can be used to Reinstall or Upgrade to Sierra on a Mac.

Mac Os Sierra Iso Download

If you are looking toInstall Sierra on PC read Hackintosh Sierra Guide.