![]() Follow the instructions when the macOS installer opens. Select the volume containing the bootable installer, then select ‘Continue’. Hold the power button until you see the startup options window. Make sure this machine is connected to the internet and supports the macOS version you’re installing. Click ‘Continue’ and follow the instructions.įirst, plug the bootable installer into the Mac you wish to install macOS. Select ‘Install macOS’ or ‘Install OS X’ from the Utilities window. Select the volume that contains the bootable installer. Release the ‘Option’ key when you see a dark screen showing your bootable volumes. Press and hold the ‘Option’ key after turning on or restarting the Mac. Plug the bootable installer into a Mac that’s connected to the internet and is compatible with the macOS version you’re installing. The steps are different, depending on whether you're using an Intel-based Mac or one with Apple silicon. It's now time to use the bootable installer to install a fresh copy of macOS. You've made it to the final step of learning how to install macOS from a USB. You've now successfully created a bootable installer that you can use to install macOS on other machines. If asked, click 'OK' to allow the copying of files to proceed. The process requires you to use the Terminal command lines and internet connection. Type 'Y' to confirm that you want to erase the volume, then press 'Return'. Follow the three steps to download the macOS bootable installer to an external USB and then clean install macOS from USB without a hitch. Type your administrator password when prompted, then press 'Return' again. Continue with TerminalĪfter pasting the command above, hit the 'Return' key. Change the name in the command to match your settings, if necessary.įor macOS Big Sur, copy and paste the following into Terminal: sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolumeįor macOS Catalina: sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolumeįor macOS Mojave: sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolumeįor macOS High Sierra: sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolumeįor OS X El Capitan: sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolume -applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app 3. With each command, it's assumed the installer is located in your 'Applications' folder and 'MyVolume' is the name of the USB flash drive. ![]() The command differs, depending on the macOS version you're going to install. In the next step, you'll enter a command in Terminal. ![]() Choose 'Finder' then select 'Go' from the menu bar. Connect the USB flash drive to the computer you wish to install macOS. ![]() Once you have your bootable installer ready, it's time to move to the next step. Oh, I did have the button battery die on my G4 Silver, whoopie. I'm one of those former Apple zealots, who literally has not had a single breakdown or problem since I bought my first Mac in 1999. Connect the bootable macOS Mojave installer drive to the Mac via a USB port Reboot the Mac, then immediately start holding the OPTION key on the. It’s recommended to have a Time Machine backup, in. Anyone have any advise, as I'm new to troubles with my Macs. How to Clean Install MacOS Mojave Complete a full Time Machine backup before starting this process. Looks like a clean install this time around, and we'll see. ![]() In the Recovery app window, select Reinstall for your macOS. I have never had an issue with an update in 20 years and this is a new machine, well less than a year old with low miles, so it's not my apps or settings, it's the OS somehow. Choose Apple menu > Shut Down, press and hold the power button until Loading startup options appears, select Options, click Continue, then follow. I have a 2017 iMac and got the QTA update, but my Mac began crashing on almost every app, so I followed the OP's advice and got the full installer from the app store, by searching. Here is the link, along with the guide link. Actually, go to the unsupported Mojave thread and on page one, is his link to the latest 10.14.6 Download and patcher version 1.3.3. ![]()
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