![]() Sudo /Application/Install\ macOS\ High\ Sierra. Within a few seconds, a macOS Utility screen should pop up. Connect your macOS High Sierra bootable USB. Hold down Command () R to boot into recovery mode. Click on Startup Disk and select the installer. Sudo /Application/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/the name of your boot drive To install High Sierra from a USB using your startup disk drive: 1. Make sure that you have downloaded the install macOS High Sierra app and that your boot media (usb key or external hard drive) is properly formatted to mount (that you see it on your desk top when you plug it in).ġ) Bring up a new Terminal window by clicking on Launchpad, finding Terminal and clicking on itĦ) Hold down the control key and click on the "install macOS High Sierra.app"Ĩ) Scroll down to "createinstallmedia" and drag and drop it into the Terminal window that you opened in 1)ġ0) Drag and drop the boot media (usb key or external drive) into the Terminal window. Finally, I realized that most of this can be done with drag and drop with the exception of typing sudo and -volume: ![]() I have been trying to follow what seems to be simple instructions with no success for an hour. I can't believe how complicated the instructions are for us the uninitiated.
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