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简介

Create a bootable USB drive for macOS X El Capitan, Yosemite, Mavericks, Sierra, High Sierra, and Mojave.

  1. Launch the App Store on your Mac. Search for the macOS version you want (this option is only on macOS High Sierra and lower)
    • Launch the App Store on your Mac.

    • Search for the macOS version you want (this option is only on macOS High Sierra and lower)

    • Click Get or Download

    • If you have previously downloaded this version of macOS using the current Apple ID account, you might find it in the "Purchased"tab.

    • If you're using a Windows machine, you'll need to borrow a macOS machine, go to a Apple Retail Store and download it there or use a Hackintosh

  2. After the downloading process is complete, close the App Store. The installation window should appear afterwards.
    • After the downloading process is complete, close the App Store. The installation window should appear afterwards.

    • Click the "Install macOS (whatever version you have downloaded)" menu at the top left of the screen, and select "Quit Install macOS (whatever version you have) ."

  3. Insert your USB drive into your Mac's USB port.
    • Insert your USB drive into your Mac's USB port.

    • Open Finder to find your USB or if your Finder preferences have been set, you can find it on the Desktop.

    • Your USB drive will be completely erased in the following steps. Make any backups of your data beforehand.

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  5. Launch Terminal. You can either use Spotlight or navigate to "Utilities" inside of Applications within Finder and double click Terminal. You can either use Spotlight or navigate to "Utilities" inside of Applications within Finder and double click Terminal.
    • Launch Terminal.

    • You can either use Spotlight or navigate to "Utilities" inside of Applications within Finder and double click Terminal.

  6. In Terminal, type one of the following commands, depending on your version of macOS. (The name of  the version of macOS, is the one you want to install on the key and downloaded.) Instead of "/Volumes/MyVolume", type the name of your USB drive. Type everything else exactly as you see it (or better yet, copy and paste it from here).
    • In Terminal, type one of the following commands, depending on your version of macOS. (The name of the version of macOS, is the one you want to install on the key and downloaded.)

    • Instead of "/Volumes/MyVolume", type the name of your USB drive. Type everything else exactly as you see it (or better yet, copy and paste it from here).

    • For El Capitan : sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app

    • For Yosemite : sudo /Applications/Install\ OS\ X\ Yosemite.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ OS\ X\ Yosemite.app

    • For Mavericks : sudo /Applications/Install\ OS\ X\ Mavericks.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ OS\ X\ Mavericks.app

    • For Sierra : sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ macOS\ Sierra.app

    • Other versions including High Sierra and Mojave : see the next step.

    • If you did not download the file from the App Store, you must modify the file path after "applicationpath".

  7. For High Sierra : sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ macOS\ High\ Sierra.app For Mojave : sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ macOS\ Mojave.app
    • For High Sierra : sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ macOS\ High\ Sierra.app

    • For Mojave : sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ macOS\ Mojave.app

  8. After correctly entering the command with the name of your USB drive, press the [return] key. Enter the macOS administrator password.
    • After correctly entering the command with the name of your USB drive, press the [return] key.

    • Enter the macOS administrator password.

    • Your password will not be displayed.

    • Press [return].

    • Check the name and path of your USB key. If it looks correct, press the [Y] key, then press [return].

    • The bootable drive creation will begin. Please wait until the process completes.

  9. When Terminal indicates the process is "Done," the creation of your bootable drive has succeeded.
    • When Terminal indicates the process is "Done," the creation of your bootable drive has succeeded.

    • To boot off the USB, first make sure the Mac is off and then press and hold the [option] key when you hear the chime/turn it on .

结论

Nice work! You're done.

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Anthony Fassler

于2015年02月26日注册

4,220 信誉积分

创作了2篇指南

if it is possible with power iso i have installed this one on my system. http://standaloneinstaller.com/download-...

kennieboezi - 回复

You mean create a USB key from Windows ?

Anthony Fassler -

I'm thinking of using this method to revert back to an older os due to my mac slowing down with Sierra. Will I be able to install just Yosemite or el capitan? Without installing previous os upgrades? This way I can have a fresh mac book.

skylerzanth - 回复

Hello,

Yes you can but with this method, we must make a clean install.

So, please sure you save all your data to another hard drive.

Anthony Fassler -

Réparer ma clé usb

Marc Pitchebai - 回复

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