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In case you didn’t get the upgrade option in Software Update, you can manually download macOS Big Sur 11 from the App Store, and then create a bootable USB installer. Clean Install macOS Big Sur Using Bootable Installer Click Continue.ĭ) Perform the on-screen instructions to install macOS Big Sur.Į) Once the installation is over, restore data from the Time Machine backup. Image: macOS Update from Catalina to Big SurĬ) Once the software is downloaded, macOS Big Sur installer opens automatically. The steps are as follows:Ī) Go to Apple menu > System Preferences > Software Update.ī) In the Software Update window, click the Upgrade Now button beside macOS Big Sur. When your MacBook, Mac mini, or iMac runs on macOS Catalina, you can get the latest Mac operating system through a software update. The steps to back up your Mac start-up disk are as follows:Ī) Ensure that your Time Machine backup drive is connected to your Mac.ī) Go to Menu bar > Time Machine > Back Up Now.Ĭ) Wait till the Time Machine backs up your Mac to the external backup drive. To prevent Mac data loss due to Big Sur upgrade, you need to back up your Mac using the native backup and restoration application: Time Machine. Read on to learn the correct procedures through which you can install macOS Big Sur safely without losing any of your valuable data. Plus, it features a rehashed Safari, Messaging, App Store, Notes, Photos, and Maps.

The operating system brings forth major user interface redesign, and it is the first macOS version to support ARM-based processors. On November 12, 2020, Apple released its new operating system macOS Big Sur 11 that succeeded macOS Catalina 10.15.