Home Technology How to Create a macOS ISO: A Step-By-Step Guide

How to Create a macOS ISO: A Step-By-Step Guide

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If you’re a Mac enthusiast or just a general lover of all things Apple, you may have found yourself in need of creating a macOS ISO at some point. Maybe you’re a developer who needs it for testing purposes, or perhaps you just want to have a backup of your operating system handy. Whatever the reason, fear not! I’m here to guide you through the process of creating a macOS ISO in a fun and informative way. Get ready to embark on this exciting adventure with me!

Step 1: Acquire the macOS Installer

The first step in creating a macOS ISO is to acquire the macOS installer. You can do this by downloading it from the Mac App Store. Just head over to the App Store, search for macOS, and hit the download button. This may take some time depending on your internet connection, so feel free to grab a snack or indulge in some deep breathing exercises while you wait.

Step 2: Prepare a USB Drive

Once the macOS installer has finished downloading, it’s time to prepare a USB drive to use as the bootable installation media. You’ll need a USB drive with at least 16GB of storage space. Plug the USB drive into your Mac and open Disk Utility. Select the USB drive from the list of available drives and click on the “Erase” button. Give your USB drive a name, choose the “Mac OS Extended (Journaled)” format, and hit the “Erase” button. Once the process is complete, your USB drive will be ready for action!

Step 3: Create the Bootable Installation Media

Now that you have your macOS installer and prepared USB drive, it’s time to create the bootable installation media. Open Terminal and enter the following command:

sudo /Applications/Install macOS Mojave.app/Contents/Resources/createinstallmedia –volume /Volumes/Untitled –nointeraction

Replace “Install macOS Mojave.app” with the name of the macOS installer you downloaded, and “Untitled” with the name of your USB drive. Hit enter and enter your admin password when prompted. This process will take some time, so grab another snack or engage in some interpretive dance while you wait.

Step 4: Create a Disk Image

With the bootable installation media created, it’s time to create a disk image of your macOS installer. Open Disk Utility, select the USB drive from the list of available drives, and click on the “File” menu. Choose the “New Image” option and select “DVD/CD Master” as the format. Save the disk image to your desktop, and voila! You now have a macOS ISO ready to go.

Step 5: Shake Things Up

Now that you’ve created your macOS ISO, it’s time to shake things up! Literally. Take a break from the computer and do a little dance or bust out some yoga moves. It’s important to keep things fun and lively, especially when dealing with technology.

Step 6: Test Your ISO

Before you call it a day, it’s important to test your macOS ISO to ensure that it’s working properly. Connect a USB drive to your Mac and open Disk Utility. Select the USB drive from the list of available drives and click on the “Restore” button. Choose the macOS ISO as the source and your USB drive as the destination. Hit the “Restore” button and let the magic happen.

Once the restoration process is complete, restart your Mac while holding down the Option key. This will bring up the boot menu, where you can select the USB drive as the bootable device. If all goes well, you should see the macOS installer load up and be ready to install. Pat yourself on the back for a job well done!

Creating a macOS ISO may seem like a daunting task, but with a little patience and a sense of humor, it can be an enjoyable and rewarding experience. So go ahead, give it a try and feel the satisfaction of creating your very own macOS ISO. And remember, if at first you don’t succeed, just keep trying and keep laughing. Good luck, and happy ISO-making!
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