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- Download the installation file from the Mac App Store.
- If you have downloaded it before, you can find it in the tab “Purchased items”
- It is not possible to download earlier versions of macOS or Mac OSX from the Mac App Store before macOS Mojave.
- Exit the App Store after the download is complete. The installer window will appear automatically.
- Go to Install OS X, then exit this via Finish installation.
- Connect the USB drive to the Mac.
- Attention: the drive will be formatted later, you must not have anything important stored on it.
- Search the terminal either via Spotlight or by calling Utilities/Terminal.
- Click on it to open Terminal to start.
- Set one of the following lines in the Terminal (the name of the operating system is that of the system you want to install on the stick, not that of the system of your Mac):
- For El Capitan sudo /Applications/Install\ OS\ X\ El Capitan.app/Contents/Resources/createinstallmedia –\ 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
- Go to the next step.
- Change the path “/Volumes/MyVolume” must be replaced by the path to your USB drive. To do this, delete the current path and drag and drop it over.
- 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
- For Catalina : sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia –volume /Volumes/MyVolume
- For Big Sur : sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia –volume /Volumes/MyVolume
- For Monterey : sudo /Applications/Install\ macOS\ Monterey.app/Contents/Resources/createinstallmedia –volume /Volumes/MyVolume
- For Ventura : sudo /Applications/Install\ macOS\ Ventura.app/Contents/Resources/createinstallmedia –volume /Volumes/MyVolume
- If you get the error “does not appear to be a valid OS installer application“delete the macOS image and upload it again.
- After the path has been changed, press the Enter key.
- Enter the password of your Mac.
- The password is not displayed, but entered anyway.
- After entering the password press the Enter key again.
- Check again the path to your USB drive, if it is correct, then you can press “y” and press the Enter key key.
- Now the copying process to the USB drive starts, wait until it is finished.
- The terminal shows “Done” and the USB boot drive is ready.
- In the future you can boot from your USB drive by pressing during the restart of your Mac the “alt” key while restarting your Mac.

It’s easy to create a High Sierra USB stick. Keep a separate, high-capacity USB stick handy for this purpose. Once you have the system on the storage medium, you can use it for all Mac devices. How to create a macOS High Sierra USB stick, you will learn in this tutorial. The links marked with a symbol or green underlining are affiliate links. If a purchase is made through them, we receive a commission – without additional costs for you! More info.

High Sierra USB stick prepared: This is how it works

Use a USB stick of at least 12 GB to load High Sierra onto. Also make sure that the storage medium is empty. The data will be lost when formatting the USB stick.

First, download the High Sierra system from the Mac App Store. Check if the icon is located in the Applications folder of your Mac. You can find it under the name “macOS High Sierra.app”.
If the icon is not in the Applications folder, move the there. You can close the installer on the desktop.
Connect the USB stick. Then start the “Disk Utility”. You can find this under “Programs > Utilities”.
Select your USB stick from the list on the left and go to “Delete”.
Now enter a new name for your storage device. Select the format “MacOS Extended (journaled) or “GUID Partition Table”.
Then click on “Delete”.

Bring High Sierra to storage medium: How to proceed

For the next steps to succeed and the system to land on your USB stick, you should perform all the previous steps correctly. Namely, now it’s time to go to the Terminal app.

Open the terminal app of your Mac. You can find it under “Other” or in the programs under “Utilities”.
Now enter the following command: “sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/USB -applicationpath /Applications/Install\ macOS\ High\ Sierra.app -nointeraction”.
Make sure that no spaces occur.
Confirm with “Enter”. You may be prompted to enter your system password.
Your stick will now be created. This may take some time depending on your device and system.
To install High Sierra on a Mac, connect your USB flash drive to a Mac device. Press and hold the alt key at startup. In the Startup Manager, select your stick to install the system. However, back up all your data that is on your Mac before you start booting.

High Sierra can be transferred to a USB stick. imago images / Jürgen Ritter

Video tip: Always insert the USB stick correctly

How to install macOS Sierra, you will learn in our next post.

Currently much sought after

You can use an external hard drive or a second volume as a boot volume for the installation of the Mac operating system. These advanced steps are mainly for system administrators and other experienced users who are familiar with entering commands in Terminal. . You don’t need a bootable installer to upgrade macOS or hreinstall macOS, but it can be useful if you want to install macOS on multiple computers without downloading the installer each time, or if you can’t install a compatible macOS via the Finder or macOS Recovery.

What you need to create a bootable installer

USB flash drive or other secondary drive with at least 14 GB of available space formatted as Mac OS Extended.
Installer for OS X El Capitan or later. To get the full installer, your Mac must be running the latest version of OS X El Capitan, the latest version of macOS Sierra, or a later version of macOS. Download from a Mac that is compatible with the macOS you are downloading. Enterprise administrators: Download from Apple, not from a locally hosted update server.Download macOS

Use Terminal to create the bootable installer.

Insert the USB flash drive or other media you’re using for the bootable installer.
Open Terminal. It is located in the Utilities folder of the Program Files folder.
Type one of the following commands into Terminal, and then press Enter to type the command. Each command assumes that the installer is in your Applications folder and that MyVolume is the name of the USB flash drive or other volume you are using. If the volume has a different name, replace MyVolume in the command with the actual name of the volume.
When prompted, type your administrator password. The terminal will not display any characters as you type. Then press the Return key.
When prompted, type J to confirm that you want to delete the volume. Then press the Enter key. Terminal displays the progress of deleting the volume.
After deleting the volume, you may see a warning that Terminal wants to access files on removable media. Click OK to allow the copy operation to continue.
Once Terminal reports that it is finished, the volume will have the same name as the loaded installer, such as “Install macOS Monterey.” You can now exit Terminal and eject the volume.

Commands

Depending on which macOS you downloaded, enter one of the following commands in Terminal, as described above. If your Mac is running macOS Sierra or earlier, the command should start with --applicationpath followed by the appropriate installation path, as shown in the following command for El Capitan.

Ventura

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

Monterey

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

Big Sur

sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume

Catalina

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

Mojave

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

High Sierra

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

El Capitan

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

Use the bootable installer

Apple chip

Using the bootable installer, connect the volume to a Mac that has an Internet connection and is compatible with the version of macOS you want to install. (The bootable installer does not load macOS from the Internet, but an Internet connection is required to retrieve firmware and other information specific to the Mac model).
Turn on your Mac and hold down the power button until you see the boot options window. Your bootable volumes will be displayed there.
Select the volume that contains the bootable installer, then click Continue.
Follow the on-screen installation instructions when you open the macOS installer.

Intel processor

Connect the volume containing the bootable installer to a Mac that has an Internet connection and is compatible with the version of macOS you want to install. (With the bootable installer, macOS is not downloaded from the Internet, but an Internet connection is required to retrieve firmware and other information specific to the Mac model).
Turn on your Mac, then immediately press and hold the Option (Alt) key.
Release the Option key when you see a dark screen with bootable volumes.
Select the volume that contains the bootable installer. Then click the arrow on the screen or press the Return key. If you cannot boot from the bootable installer, make sure that the boot security utility is set to allow booting from external media.
Select your language when prompted.
Select “Install macOS” (or “OS X Installation”) in the Utilities window, and click “Continue”. Then follow the on-screen instructions.

More Information

To get information about the command createinstallmedia command and the arguments that can be used with it, make sure that the macOS installer is present in your Applications folder, and then enter the following path in Terminal:

/Applications/Install\ macOS\ Ventura.app/Contents/Resources/createinstallmedia

/Applications/Install\ macOS\ Monterey.app/Contents/Resources/createinstallmedia

/Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia

/Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia

/Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia

/Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia

/Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia

Release Date: December 01, 2022 Thuluva Vellalar Caste.