Upgrade to macOS Big Sur
Before installing this upgrade, make sure that your Mac is ready.
Use About This Mac to see the version of Mac operating system installed on your Mac, and find out whether it's the latest version. Oct 19, 2020 Or you can get the latest macOS Catalina on the App Store for other versions including High Sierra (10.13), Sierra (10.12) or El Capitan (10.11). If you’re using Lion (10.7) or Mountain Lion (10.8), you will need to upgrade to El Capitan (10.11) first before you could upgrade to macOS Catalina.
macOS Big Sur supports most Mac models introduced in 2013 and later.View compatible Mac models
Make a backup
Before you upgrade, make a complete backup with Time Machine, or store your files in iCloud.Learn how to back up your Mac
Free up space
If the installer needs more storage space to upgrade, you can free up space using tools that come with your Mac.Free up storage space
Download macOS Big Sur
If you’re using macOS Mojave or later, choose Apple menu > System Preferences, then click Software Update. If you’re using an earlier macOS, use the App Store instead.Learn how to download and install macOS Big SurGo to the App Store
Get to know macOS Big Sur
Learn about some of the new features of macOS Big Sur.
Control Center brings favorite controls such as Bluetooth, Wi-Fi, Do Not Disturb, and Sound together in a single place—so you can easily adjust them at any time.Use Control Center
Notification Center puts notifications and>
Customize your start page, navigate with ease using the new tab bar, and access a new privacy report to see just how Safari protects your privacy as you browse. Netflix video downloader for mac.Get to know Safari
Discover great places around the world and navigate easier with guides, cycling directions, indoor maps, Look Around, electric vehicle routing, and more.
Send messages to friends and family using new tools that make it easier to keep track of group conversations and give you fun, engaging ways to express yourself.Use MessagesLearn more on YouTube
Use the expanded editing capabilities in Photos to easily make simple changes and more advanced adjustments to your photos.Learn how to edit your photos
How To Update Mountain Lion To Catalina
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Is your Mac up to date with the latest version of the Mac operating system? Is it using the version required by some product that you want to use with your Mac? Which versions are earlier (older) or later (newer, more recent)? To find out, learn which version is installed now.
Can You Upgrade From Mountain Lion To Catalina
If your macOS isn't up to date, you may be able to update to a later version.
Which macOS version is installed?
From the Apple menu in the corner of your screen, choose About This Mac. You should see the macOS name, such as macOS Big Sur, followed by its version number. If you need to know the build number as well, click the version number to see it.
Which macOS version is the latest?
These are all Mac operating systems, starting with the most recent. When a major new macOS is released, it gets a new name, such as macOS Big Sur. As updates that change the macOS version number become available, this article is updated to show the latest version of that macOS.
If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps that are installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.
Mountain Lion Pictures
|macOS Big Sur||11.2.3|
|macOS High Sierra||10.13.6|
|OS X El Capitan||10.11.6|
|OS X Yosemite||10.10.5|
|OS X Mavericks||10.9.5|
|OS X Mountain Lion||10.8.5|
|OS X Lion||10.7.5|
|Mac OS X Snow Leopard||10.6.8|
|Mac OS X Leopard||10.5.8|
|Mac OS X Tiger||10.4.11|
|Mac OS X Panther||10.3.9|
|Mac OS X Jaguar||10.2.8|
|Mac OS X Puma||10.1.5|
|Mac OS X Cheetah||10.0.4|