High sierra usb installer terminal12/27/2022 ![]() ![]() ![]() Update: Don’t miss this documentation from JAMF for more on the subject. I wish Apple would just have a support document up with direct downloads for all of this stuff, but this tool is not a bad alternative. Softwareupdate -fetch-full-installer -full-installer-version 10.13.6 If you have unplugged the USB in which the High Sierra installer is placed, plug it back into your Mac. Once the high sierra installer file has been placed in the USB, open up the terminal application in order to create a boot disk. I was not able to test if 10.13.6 would download the hardware specific build of 10.13.6 for the 2018 MacBook Pro, since I do not have that hardware. Install the High Sierra installer with Terminal. The -fetch-full-installer flag has a sub-flag: -full-installer-version which allows you to download a specific version.ĭuring my testing in the Catalina beta version I was able to download 10.15, 10.14.6, 10.14.5, and 10.13.6. The softwareupdate command has some neat tricks up its sleeve, as pointed out by Armin Briegel: Obviously, change High\ Sierra.app to whatever version you. This means the command must start with sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia is the location of the script. In case you’re curious, here’s how this breaks down: To run the command as root. This command will download the most recent version of macOS, depositing it in your Applications folder: sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/Installer -applicationpath /Applications/Install\ macOS\ High\ Sierra.app. Thankfully, macOS installers can be downloaded via Terminal in macOS Catalina. ![]() However, I’ve run into a situation several times where the Software Update mechanism simply refuses to initiate a download: Most of the time, you can re-download the current version of macOS via the Mac App Store, and older ones via these links: ![]()
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