#Macos big sur downgrade mac#
Step 5: Turn off your Mac with the bootable USB drive still plugged in. You need to wait about 10 minutes in this step. Step 4: When the setting part is done, click "Burn" button to create a bootable Catalina USB drive. You will be lead to a new window immediately, where you can import Catalina dmg file and select USB drive. Step 3: Plug in a USB drive and open UUByte DMG Editor app then click "Burn" section.
#Macos big sur downgrade install#
Step 2: Download and install UUByte DMG Editor onto a Windows PC or Mac.
Step 1: Get macOS Catalina DMG file from here. This can be done with the help of UUByte DMG Editor. However, you should create a macOS Catalina USB installer first. If the above two methods do not work, then you can use this trick to downgrade from Big Sur to Catalina. Method 3: Downgrade from Big Sur to Catalina by Reinstalling CatalinaĪnother possible solution is to install macOS Catalina over Big Sur partition via a bootable USB drive. And this may take hours to complete if the download speed was too slow. Your Mac must be connected to Internet if you chose to downgrade from Big Sur to Catalina in this way. After that, follow the screen instructions to install macOS on your Mac. At this time, please choose Reinstall macOS and hit Continue button. Step 3: Quite Disk Utility app and back to macOS Utilities. Click the Erase option, then choose APFS as your file system and GUID as your partition scheme. Step 2: Hit the Continue button and choose the option for Startup Disk. The purpose of this is to be able to erase Big Sur installation and re-format it for macOS Catalina. Next, choose the Disk Utility app when you see the macOS Utilities window on your screen. Now, restart the Mac but hold down the Command+ R key combination during boot.
Step 1: Make sure your power adapter is connected because this could take a while. After that, Mac will start downloading and installing Catalina from Internet (Apple Server).
If your Mac is originally shipped with macOS Catalina, you can then downgrade from Big Sur to Catalina by removing the current Big Sur installation in Recovery Mode. Method 2: Downgrade from Big Sur to Catalina by Deleting Big Sur Installtion You can still apply the following two methods to downgrade macOS from a new version to old one. However, macOS Catalina will be no longer available after a period of time according to Apple convention. This method still works till the day we wrote the post. The process will overwrite Big Sur installation in a safe way. Just follow the screen prompt to install macOS Catalina on your Mac. Step 3: The installer will be opened automatically when the download is completed. When it starts, you will see a progress bar in Launchpad and you have to wait for minutes to fully download the app because the app is pretty big. Step 2: Click "Get" button at the top to download macOS Catalina install app. Step 1: Search "Catalina" in App Store on your Mac running with Big Sur. You don't need to make additional settings as the whole process is quite straightforward and safe. This is the direct way to downgrade from Big Sur to Catalina. MacOS Catalina is the official app you can use to install Catalina on current Mac on the air. Method 1: Directly Downgrade from Big Sur to Catalina Weather widget display incorrect location.Some keyboard shortcuts not working on non-English languages.Media import may not work in iMovie and Final Cut Pro.
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