Create Bootable USB From ISO on Mac

Are you looking for an easy way to create a bootable USB drive from an ISO file on your Mac? Look no further! In this article, we will guide you through the process of creating a bootable USB drive from an ISO file and using it to reinstall macOS.

Why Create a Bootable USB Drive?

Before we dive into the steps, let's discuss why creating a bootable USB drive is useful. You can use it to install or update macOS on multiple systems without having to download the installer on each Mac. Additionally, a clean installation of macOS allows you to get rid of junk apps and files that may have accumulated over time, resulting in a faster-running Mac.

Steps to Create a Bootable USB Drive

To create a bootable USB drive from an ISO file, follow these steps:

1. Connect your USB drive to your Mac.

2. Open the Disk Utility app on your Mac. You can find it in the Utilities folder within the Applications folder.

3. Select your USB drive from the list of available disks and click the 'Erase' tab.

4. Choose the 'Quick Erase' option and follow the prompts to erase the disk.

5. Once the disk is erased, close the Disk Utility app.

Booting Your Mac with a Bootable USB Drive

To boot your Mac with a bootable USB drive, you need to select it as a startup disk. Here's how:

1. Power on your Mac or restart it if it's already on.

2. Immediately press and hold the Option key when it starts booting.

Method 1: Booting an Intel-Based Mac

If you have an Intel-based Mac, follow these steps to boot from the USB drive:

1. Plug your created USB drive into an open USB port on your Mac.

2. Select the USB drive as a startup disk by clicking on it in the Startup Disk preferences window.

Method 2: Booting an M1 or M2 Apple Silicon Mac

If you have an M1 or M2 Apple silicon Mac, follow these steps to boot from the USB drive:

1. Power on your system and keep the Power button pressed down.

2. Select the USB drive as a startup disk by clicking on it in the Startup Disk preferences window.

Using Your Bootable USB Drive

Once you have booted your Mac with the bootable USB drive, you can use it to install or update macOS. You can also use the built-in recovery tools that come with the macOS installer to troubleshoot and fix different kinds of issues.

In conclusion, creating a bootable USB drive from an ISO file is a simple process that allows you to reinstall macOS on multiple systems without having to download the installer on each Mac. With these steps, you can easily create a bootable USB drive and use it to install or update your Mac's operating system.

Create bootable usb from iso on mac