MacBook Pro — our most powerful notebooks featuring fast processors, incredible graphics, Touch Bar, and a spectacular Retina display. Testing conducted by Apple in June 2020 on production 1.4GHz quad-core Intel Core i5-based 13-inch MacBook Pro systems with 8GB RAM, 256GB SSD, and prerelease macOS Big Sur. Systems tested with WPA2 Wi-Fi network connection while running on battery power, with display brightness set to 12 clicks from bottom or 75%.

Versions of the operating system earlier than the one that shipped with a particular Mac are not compatible. MacBook Pro models running Mac OS X 10.5 'Leopard' or Mac OS X 10.6 'Snow Leopard' are capable of running essentially all Mac software written for Intel-based Macs and the vast majority of Mac OS X applications written for PowerPC-based systems using the 'Rosetta Universal Binary. Jun 22, 2020. MacOS Server was previously known as Mac OS X Server and later OS X Server. Mac OS X Server 1.0 – code name Hera, also referred to as Rhapsody; Mac OS X Server 10.0 – code name Cheetah; Mac OS X Server 10.1 – code name Puma; Mac OS X Server 10.2 – code name Jaguar; Mac OS X Server 10.3 – code name Panther; Mac OS X Server 10.4 – code name Tiger; Mac OS X Server 10.5 – also.

If you try to start up your Mac from a hard disk, network volume, or Time Machine backup that contains an incompatible version or build of macOS, you might experience one or more of these symptoms:

• Your Mac doesn't finish starting up, or displays a prohibitory symbol at startup.
• You see a message that you're using an unsupported or incorrect version of the Mac operating system.
• Your Mac doesn't respond to your trackpad, mouse, or keyboard.
• Apps unexpectedly quit.
• Your Mac doesn't sleep or wake.
• You don't hear any sound from your Mac.
• The fans in your Mac are louder, because they're spinning faster.
• The image on your display appears to shrink, has black bars around it, or appears tinted.
• You can't use Bluetooth or Wi-Fi.

Which Mac operating systems are compatible?

The version of macOS that came with your Mac is the earliest version compatible with that Mac. To find out whether your Mac is compatible with a later version of macOS, check the system requirements:

If your Mac won't start up from a compatible version of macOS, it might require a specific build of that version. To get the correct build, reinstall macOS or upgrade to a later version of macOS.

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• To restore a Time Machine backup that was created on a different Mac, use Migration Assistant.

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How to get updates for macOS Mojave or later

If you've upgraded to macOS Mojave or later, follow these steps to keep it up to date:

1. Choose System Preferences from the Apple menu , then click Software Update to check for updates.
   
2. If any updates are available, click the Update Now button to install them. Or click ”More info” to see details about each update and select specific updates to install.
   
3. When Software Update says that your Mac is up to date, the installed version of macOS and all of its apps are also up to date. That includes Safari, iTunes, Books, Messages, Mail, Calendar, Photos, and FaceTime.

To find updates for iMovie, Garageband, Pages, Numbers, Keynote, and other apps that were downloaded separately from the App Store, open the App Store on your Mac, then click the Updates tab.

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To automatically install macOS updates in the future, including apps that were downloaded separately from the App Store, select ”Automatically keep my Mac up to date.” Your Mac will notify you when updates require it to restart, so you can always choose to install those later.

How to get updates for earlier macOS versions

If you're using an earlier macOS, such as macOS High Sierra, Sierra, El Capitan, or earlier,* follow these steps to keep it up to date:

1. Open the App Store app on your Mac.
2. Click Updates in the App Store toolbar.
3. Use the Update buttons to download and install any updates listed.
4. When the App Store shows no more updates, the installed version of macOS and all of its apps are up to date. That includes Safari, iTunes, iBooks, Messages, Mail, Calendar, Photos, and FaceTime. Later versions may be available by upgrading your macOS.

To automatically download updates in the future, choose Apple menu  > System Preferences, click App Store, then select ”Download newly available updates in the background.” Your Mac will notify you when updates are ready to install.

* If you're using OS X Lion or Snow Leopard, get OS X updates by choosing Apple menu  > Software Update.

How to get updates for iOS

Learn how to update your iPhone, iPad, or iPod touch to the latest version of iOS.

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• Learn how to upgrade to the latest version of macOS.
• Find out which macOS your Mac is using.
• You can redownload apps that you previously downloaded from the App Store.
• Your Mac doesn't automatically download large updates when it's using a Personal Hotspot.