How to Create a Bootable macOS High Sierra Installer Drive

Creating a bootable macOS High Sierra installer drive allows you to easily install or reinstall macOS on multiple Macs without having to download the installation file each time. In this article, we'll walk you through the process of creating a bootable installer drive using Disk Utility and the App Store.

Method 1: Downloading from the App Store

The easiest way to create a bootable macOS High Sierra installer drive is by downloading it from the App Store. To do this, open the App Store on your Mac and click on the 'Updates' tab at the top of the screen. Look for 'macOS High Sierra' in the list of available updates, and click the 'Download' button next to it.

Once you've downloaded the installer file, you can follow these steps:

1. Connect an external hard drive to your Mac.

2. Open Disk Utility, which is located in Applications > Utilities.

3. Select the external hard drive from the list on the left side of the window.

4. Click the 'Erase' button and select 'Mac OS X Extended (Journaled)' as the file format and 'GUID Partition Map' as the scheme.

5. Name your drive, then click 'Erase'.

6. Once the drive is erased and reformatted, you can restart your Mac and hold down the 'Option' key while booting up to select the external hard drive as the startup disk.

Method 2: Downloading from the OS X Utilities Repair Screen

If you're having trouble downloading the installer file from the App Store, you can also create a bootable macOS High Sierra installer drive using the OS X Utilities repair screen. To do this:

1. Restart your Mac and hold down the 'Command + R' keys while booting up to enter the OS X Utilities repair screen.

2. Select 'Reinstall OS X' from the menu, then click 'Continue'.

3. Follow the prompts to download and install macOS High Sierra on your external hard drive.

Creating a bootable macOS High Sierra installer drive is a simple process that allows you to easily install or reinstall macOS on multiple Macs without having to download the installation file each time. By following these steps, you can create a bootable installer drive using Disk Utility and the App Store or by downloading the installer file from the OS X Utilities repair screen.

Remember to always backup any data before erasing and reformating your external hard drive.

How to create a bootable macos high sierra installer drive