macOS High Sierra is officially here following months of beta testing. Apple’s newest macOS version is not a significant update, but it comes with a lot of new things that encourage you to upgrade. Updating a Mac is pretty simple, as the process only involves downloading the installer file from the Mac App Store. However, if you have more than two Macs, the process is exhausting.
Fortunately, Apple allows users to create a bootable installation drive, so you can install a macOS version on multiple Mac machines. Following this method, you don’t need to enter your Apple ID and password and wait for the download to finish.
There are two different ways you can create a bootable macOS High Sierra installation drive. However, we are going for the fastest way to create an external installation drive. Before we begin, make sure you have an external drive and downloaded an app called Install Disk Creator. If not, head over to this link to download the app.
How to create a bootable macOS High Sierra installation drive
Step one: Once you have the app installed on your Mac, connect your external hard drive to your Mac. After that, open Install Disk Creator on your computer (the app will automatically format your external hard drive)
Step two: When you are in, click on the menu under the “Select the volume to become the installer” and select your hard drive from the list
Step three: If your Mac is now running macOS High Sierra, the app will automatically detect it and select it to create a bootable installation drive (if your Mac is now running an older version of macOS, you need to download the macOS High Sierra installer and select it by clicking on the “Select the OS X Installer” )
Step four: Click “Create Installer” option at the bottom of the Install Disk Creator window (You will be asked to enter your username and password to confirm). After that, the app will start creating the boot drive (the process may take a while).
Note: Once you have downloaded the macOS High Sierra installer to your Mac, press Command-Q to quit the installer.
Got any questions? Let us know in the comments below.