This article we explain how to update and Download macOS Big Sur on your Mac – and what you should do before clicking the install button. How to update MacOS is easier, free, and doesn't take much time, but there are a few things we recommend you do first to set up your Mac. If you haven't updated to macOS Catalina, read on to find out how to update to macOS Catalina or Mojave from High Sierra, Sierra, El Capitan, Yosemite, or even an older version of Mac OS X.
How to Update macOS Big Sur from Catalina or Mojave
If you have Mojave or Catalina installed on your Mac, updates will be visible through Software updates, and a notification that an update is available.
- Open System Preferences (you can click on the Apple logo in the menu to find it).
- Click Software Update.
- Your computer checks for updates, and indicates that an update is available for your Mac. Click Upgrade Now to download the installer for the new version of macOS.
- While the installer is downloading, you can still use your Mac. Once the installer has finished downloading, you can click to install the new version of the OS – but be careful that your Mac will temporarily stop working when the software is installed.
Update Big Sur from High Sierra or earlier
If you're running High Sierra or an earlier version, you need to do the following:
- Launch the App Store on your Mac (click on the blue icon that contains the white A, or search by pressing the spacebar + command and typing app store).
- Search for macOS.
- Click Get (Older app stores may have a Download button).
- Fill in your Apple ID information if prompted.
- The installer will start downloading, you can see how long it will take if you look at the bar under Downloading.
- Once the installer file has finished downloading, a window will appear on your Mac notifying you and asking you to Continue... The Installer file can be found in the Application (but it will open automatically).
- Luckily the download process happens in the background, so you can continue working or browsing the website.
Want to know where you can find Big Sur on the Mac App Store? You can download MacOS Big Sur HERE.
MacOS Big Sur update process
When we started downloading Big Sur, the Mac said it would take 10 hours to download a 12.18 GB file, so be prepared to wait a while especially if you are on a weak Wi-Fi network. You can let your Mac download big sur OS updates overnight. Now that you have the installation file, we will explain how to install Big Sur next step.
How to install macOS Big Sur
Once the installer has finished downloading (as described above), you're ready to install the macOS Big Sur software on your Mac.
- After the installer file is downloaded, you'll see a window pop up on your Mac asking you to start the installation process.
- If you're ready to install, click Continue (be careful as this can take a long time, so resolve anything that can't wait before resuming the installation).
- Follow the on-screen instructions to complete the installation of the software update, which will take about half an hour to an hour depending on the specifications of your Mac.
How to prepare your Mac for OS updates
- Find the version of macOS you need.
- Check if your Mac supports macOS Big Sur
- Make sure you have enough space on your Mac. The installation file for big sur beta is 10GB!
- Backup your Mac.
- Make sure your Mac doesn't get an error.
- Sign in to iCloud.
- Make sure you're on a fast and trusted network.
- Update to the latest version of your current version of macOS.
- Download macOS from the Mac App Store.
- Install macOS on your Mac.
Find the version of macOS you need
Make sure you have enough space
Make Sure Your Mac Is Healthy
Back Up Your Mac If It Doesn't Error
Sign in to iCloud
Make sure the network connection is secure
Update macOS to the latest version in all your software
How to install macOS updates on Big Sur, Catalina, or Mojave
- Open System Preferences
- Click Software Update
- Click to update the software if an update is available
- Or, click the Apple logo in the menu bar and choose Software Update.
How to install updates to macOS in High Sierra or earlier
- Open the Mac App Store
- Click Updates
- Click Update next to the update you want to install
- If the software has not been downloaded (you can set it automatically), it will be downloaded in the background.
- Once the software is downloaded, you will see a notification that it is ready to install
- Your Mac might tell you'll restart before installing an update if the time is bad, you can choose to postpone the update for an hour, or the next day.
- When you're ready to continue, click Update again and wait for your Mac to restarts and installs updates.
- Your Mac will shut down and the installation will start – be careful as this can take a while and there are no alerts until it actually starts up, the latest notifications are set to take 24 minutes, but don't panic – maybe almost 10 minutes.
- After the installation is complete, your Mac will restarts.