The macOS High Sierra 10.13.2 update improves the stability, compatibility and security of your Mac, and is recommended for all users. This update:. Improves compatibility with certain third-party USB audio devices. Improves VoiceOver navigation when viewing PDF documents in Preview. Improves compatibility of Braille displays with Mail. MacOS is the operating system that powers every Mac. It lets you do things you simply can’t do with other computers. That’s because it’s designed specifically for the hardware it runs on — and vice versa. MacOS comes with an entire suite of beautifully designed apps. It works hand in hand with iCloud to keep photos, documents and other. Mac OS X Snow Leopard (6,260 words) exact match in snippet view article find links to article Safari security updates for Windows and Snow Leopard? Users left exposed, Sophos Naked Security blog, July 30, 2012, archived from the original on August.

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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.

Make a backup

Before you upgrade, make a complete backup with Time Machine, or store your files in iCloud.

Free up space

If the installer needs more storage space to upgrade, you can free up space using tools that come with your Mac.

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.

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.

Notification Center

Notification Center puts notifications and>

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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.

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.

Photos

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Use the expanded editing capabilities in Photos to easily make simple changes and more advanced adjustments to your photos.

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Have a question?

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