Follow the onscreen installation instructions.Ī bootable installer can be useful if you want to install macOS on multiple computers without downloading the installer each time, or when you can't install using macOS Recovery or the other methods. Open your Applications folder and double-click the macOS installer, named Install. pkg file, then follow the onscreen instructions to install the macOS installer into your Applications folder. dmg file to open it and see the package (.pkg) file within.ĭouble-click the. If these links don't work as expected, try again using Safari, which is in your Applications folder.ĭouble-click the. Use these links to download a macOS disk image (.dmg) file. To get the installer from the disk image, you must use a Mac that is compatible with that macOS. These older macOS versions are available as disk images that you can download using your web browser. Or quit without installing to leave the installer in your Applications folder for later use. Follow the onscreen installation instructions. Software Update might open and ask you to download from there.Īfter downloading to your Applications folder, the installer opens automatically. If these links don't work as expected, try again using Safari, which is in your Applications folder.Ĭlick the Get button in the App Store to begin downloading. Use these links to find macOS in the App Store. If your Mac isn't compatible, the App Store dims the Get button, says that the macOS is not compatible with this device, or says that the requested version of macOS is not available. To download macOS from the App Store, you must download from a Mac that is compatible with that macOS. How to reinstall macOS from macOS Recovery Use the App Store If you want to reinstall macOS, or your Mac doesn't start up all the way because it doesn't have a working operating system, you can use the built-in Recovery system to reinstall macOS. How to update macOS using Software Update Use macOS Recovery If Software Update says that your Mac is up to date, then no new software is currently available for your Mac model. Software Update shows only software that is compatible with your Mac.

(Unfortunately, if I let VS try to build for those platforms even once, all future builds fail with the error The TargetFramework value '' was not recognized.Software Update is the fastest and easiest way to get macOS updates and upgrades, and it can use less storage space to download and install them. As long as I keep iOS and Mac Catalyst builds disabled, I can build and deploy for Android no problem. I restarted Visual Studio and hit the run button, expecting to get an error about the old XCode version. I pointed Visual Studio at the location of the app bundle (Visual Studio Preferences -> SDK Locations -> Apple). Then, as a last-ditch effort, I tried installing the most recent version of XCode that supports Catalina (XCode 12.4). I had to manually delete /usr/local/share/dotnet then re-run the Visual Studio installer to do a clean reinstall. Uninstalling Visual Studio proper is as easy as dragging the app bundle to the trash can, but that doesn’t uninstall any of the extra packages. I ended up having to reinstall Maui, which was an adventure unto itself. I’ll spare you the gory details, but I went from the project file to trying to edit some of the XML files under /usr/local/share/dotnet without getting anywhere. I dug into the build configuration files to see if there was a check I could manually disable. Then I tried to deploy and run the app, and I got an error message about the absence of XCode. (You may have to restart Visual Studio after this step.) The project built just fine. Under the project’s properties, I disabled the iOS and Mac Catalyst targets.

I created a new Maui project in Visual Studio for Mac. Obviously I need a new computer, but surely I can work on Android in the meantime, right? I quickly discovered that Maui depends on XCode 13 - which doesn’t run on my 2015 MacBook that isn’t supported by anything more recent than MacOS Catalina. NET Maui to build a mobile app for Android and iOS. This week, I dug out an old MacBook with the intention of using.

Xcode 12.4 catalina