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Peppin Kishore

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Aug 3, 2024, 9:50:45 PM8/3/24

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How to Create a Bootable macOS High Sierra Installation Drive

If you want to install macOS High Sierra on your Mac, you can use a bootable USB drive that contains the installer files. This can be useful if you want to install macOS on multiple Macs without downloading the installer each time, or if you want to perform a clean install of macOS. In this article, we will show you how to create a bootable macOS High Sierra installation drive using two methods: using Terminal and using DiskMaker X.

What You Need

To create a bootable macOS High Sierra USB drive, you need the following:

A USB 2.0 or USB 3.0 drive with a capacity of at least 8GB. Creating the installer will erase all data on the USB drive, so make sure to back up any existing data that may be on the drive.

The installer for macOS High Sierra. You can download it from the Mac App Store or from Apple's website[^1^]. The installer should be in your Applications folder and named "Install macOS High Sierra".

A Mac that is compatible with macOS High Sierra. You can check the compatibility list here[^1^].

Method 1: Using Terminal

Terminal is a built-in app that allows you to enter commands in text form. You can use Terminal to create a bootable installer for macOS using the createinstallmedia command. Here are the steps:

Plug the USB drive into your Mac and launch the Disk Utility app. You can find it in the Utilities folder of your Applications folder.

Select the USB drive from the sidebar and click on Erase. Choose "Mac OS Extended (Journaled)" as the format and "GUID Partition Map" as the scheme. Name the drive "MyVolume" or any other name you prefer. Click on Erase and wait for the process to finish.

Quit Disk Utility and open Terminal. You can find it in the Utilities folder of your Applications folder.

Type or paste the following command into Terminal, then press Return to enter the command. This command assumes that the installer is in your Applications folder and MyVolume is the name of your USB drive. If the installer or the drive has a different name, replace them accordingly in the command.

sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume

When prompted, type your administrator password. Terminal doesn't show any characters as you type. Then press Return.

When prompted, type Y to confirm that you want to erase the volume, then press Return. Terminal shows the progress as the volume is erased and copied with the installer files.

When Terminal says that it's done, the volume will have the same name as the installer you downloaded, such as Install macOS High Sierra. You can now quit Terminal and eject the volume.

Method 2: Using DiskMaker X

DiskMaker X is a third-party app that simplifies the process of creating a bootable installer for macOS. You can download it from here[^4^]. Here are the steps:

Plug the USB drive into your Mac and launch DiskMaker X.

Select Use this copy to use the Install macOS High Sierra app from the Applications folder (Select Use another copy... if the setup file is in another folder).

Select An 8 GB USB thumb drive and choose your USB drive from the list.

Click on Choose this disk and then click on Erase then create disk. Confirm that you want to erase and format your USB drive.

Enter your administrator password when prompted and wait for DiskMaker X to create your bootable installer.

When DiskMaker X says that it's done, you can quit DiskMaker X and eject your USB drive.

How to Use Your Bootable Installer

To use your bootable installer to update or install macOS High Sierra on your Mac, follow these steps: