![]() You can make a bootable flash drive aka pen drive aka USB stick or memory card and use it to install the latest macOS version on your Mac. Making a bootable macOS Catalina installer isn’t too complicated. Making a Bootable macOS Installer Media: Summing Upīootable macOS installer is useful if you want to completely erase your Mac and reinstall the operating system, or if you have more than one Macs and you don’t want to spend time (and bandwidth) downloading the macOS update. After you are done with this on-boarding step, you will see the desktop and are all set to start using macOS Catalina on your Mac. ![]() Once finished, you should see the initial macOS setup screen. Let the install process finish, which consists of a couple of automatic reboots. This time, select Install macOS and continue. Leave the options as default and click Erase again.Īfter the process finishes, close Disk Utility and you will return to the recovery screen. Select the volume where your current macOS is installed. Choose your administrator account and enter its password. Let the installer load and once it’s finished, you should enter macOS Recovery screen which will ask you to select a user account which you know the password of. Select Install macOS Catalina and click continue. Once Terminal finishes the process, you can restart your Mac and when it is booting up, press and hold Option key until you see a black screen with an option to select the startup disk. How to Install macOS Catalina from a Bootable Volume? Note that there are two dashes ( -) before volume and a space after volume.Įnter your password, press Y and press enter to start the process and let it finish - which will take about 15 minutes. Now, append -volume /Volumes/ Untitled at the end of the automatically generated string and press Return key on keyboard. ![]() It will automatically generate the path where your Catalina installer is located. Now open Downloads folder and drag the macOS Catalina Installer file on the Terminal window. Type sudo in Terminal and keep the window open. If copying and pasting or typing this command doesn’t work, you can do the following. Note: Replace Untitled (in bold above) with whichever name you gave in step 2. Sudo /Downloads/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia -volume /Volumes/ Untitled Make sure you don’t leave any spaces in-between. Open Terminal and type the following command. Now you are ready to move to the final step which is to create the bootable macOS Catalina media. Make sure you have a working, strong, and stable Wi-Fi connection to download macOS Catalina.Take complete backup of data on your Mac.Make sure you have a USB stick aka pen drive aka flash drive or memory card aka SD card with at least 16GB of storage.Make a Bootable macOS USB Stick or Memory Card Learn how to make a bootable macOS Big Sur installer. Update – 12th November, 2020: The latest update to macOS is out now. Albeit not as straightforward as before, but it is definitely possible to make a bootable installer for macOS Catalina. This change makes is a bit tricky to create a bootable install media like a USB stick or memory card. In Catalina, when you click the Get button in AppStore, you are taken to the Software Update screen to download the new update. Previously, you would download the new OS installer from AppStore itself and then use that installer to make a bootable installer for later use. With macOS Catalina, Apple has changed the way you used to download the installer. If you rely on old apps that needs an update for the new platform, you might want to hold your upgrade until these apps are updated or you find alternatives. The change that could affect it the most is the support for 32-bit apps being officially dropped. Whether you should upgrade your Macs to the new macOS Catalina is entirely up to your current workflow. Other notable changes include the abandonment of 32-bit apps in favour of 64-bit apps, refreshed Reminders, Photos, Mail, Safari, and Notes apps, and the introduction of Apple Arcade among others. It also officially kills the 20-year-old iTunes (on Mac) and brings separate apps to manage music and podcasts while also adding a new TV app. The update, named macOS Catalina, brings a bucket-full of new features including the ability of using iPad as an external screen for Mac. Apple has just released the latest update to macOS.
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