Upgrading your macOS from Catalina to Big Sur can be a relatively simple process. However, there are some important steps to follow to ensure that the upgrade process goes smoothly and that your data is protected. Here’s a step-by-step guide to help you update your macOS Catalina to macOS Big Sur.
- Check the compatibility of your Mac
The first step in upgrading to macOS Big Sur is to make sure that your Mac is compatible with the new operating system. macOS Big Sur requires a Mac that was released in 2013 or later. To check the compatibility of your Mac, go to the Apple menu and select “About This Mac.” This will show you the model of your Mac, which you can then compare to the list of supported models for macOS Big Sur.
- Back up your data
Before you begin the upgrade process, it is essential to back up your data. This will ensure that you don’t lose any important files or documents during the upgrade process. You can use Time Machine to back up your data to an external hard drive or use a cloud-based service such as iCloud or Dropbox.
- Download macOS Big Sur
Once you’ve confirmed that your Mac is compatible with macOS Big Sur, the next step is to download the new operating system. You can do this by going to the App Store and searching for macOS Big Sur. Click on the “Get” button to download the installer.
- Install macOS Big Sur
Once the installer has finished downloading, it will launch automatically. If it doesn’t, go to your Downloads folder and double-click on the installer to start the installation process. Follow the on-screen instructions to install macOS Big Sur. This process can take several minutes to complete, depending on the speed of your Mac.
- Restart your Mac
Once the installation process is complete, your Mac will automatically restart. You may need to enter your login credentials to complete the process. After logging in, your Mac will begin the process of setting up macOS Big Sur for the first time.
- Restore your data
Once your Mac has finished setting up macOS Big Sur, you can begin the process of restoring your data from your backup. You can do this by using Time Machine or by manually copying files from your external hard drive or cloud-based service.
- Set up your preferences
After restoring your data, you can begin the process of setting up your preferences for macOS Big Sur. This includes customizing your desktop, setting up your email accounts, and configuring your security preferences.

In conclusion, upgrading your macOS from Catalina to Big Sur can be a relatively simple process if you follow these steps carefully. Make sure to check the compatibility of your Mac, back up your data, download macOS Big Sur, install the new operating system, restart your Mac, restore your data, and set up your preferences. By following these steps, you can enjoy the new features and improved performance of macOS Big Sur.