Upgrade to macOS Big Sur
Before installing this upgrade, make sure that your Mac is ready.
Check compatibility
macOS Big Sur supports most Mac models introduced in 2013 and later.
View compatible Mac modelsMake a backup
Before you upgrade, make a complete backup with Time Machine, or store your files in iCloud.
Learn how to back up your MacFollow instructions here to install OS X Mountain Lion. List of older Mac OS Versions. Following Mac OS versions are still running on older Macs, but Apple does not support them anymore, and there is no point to upgrade (or downgrade) to them: OS X 10.7 Lion; OS X 10.6 Snow Leopard; Mac OS X 10.5 Leopard; Mac OS X 10.4 Tiger; Mac OS X 10.3 Panther. The table in the post above shows the CPU and motherboard combos that are compatible with each version of OS X back to 10.6 Snow Leopard. Haswell support starts with 10.8.5 Mountain Lion. The older the system, the earlier the supported OS X version. First you need to ask yourself should you even upgrade. If you're running OS X Lion, your hardware is at least 5 years old (it was released before July 2012). It likely doesn't have a SSD and there's a possibility it doesn't have enough RAM. If playback doesn't begin shortly, try restarting your device. Autoplay is paused. Easiest Way to Clean install macOS without USB Drive. How to FIX SAFE BOOT.
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.
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.
Get to know macOS Big Sur
Learn about some of the new features of macOS Big Sur. Www google com chrome download install.
Control Center
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
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.
Get to know macOS Big Sur
Learn about some of the new features of macOS Big Sur. Www google com chrome download install.
Control Center
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 CenterNotification Center
Notification Center puts notifications and>
Safari
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.
Get to know SafariMaps
Discover great places around the world and navigate easier with guides, cycling directions, indoor maps, Look Around, electric vehicle routing, and more.
Messages
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.
Upgrade To Os High Sierra
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