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#CREATE MAC ISO FILE HOW TO#
#CREATE MAC ISO FILE INSTALL#
#CREATE MAC ISO FILE UPDATE#
#CREATE MAC ISO FILE SERIES#

Hdiutil create -o /tmp/MacBigSur -size 12500m -volname MacBigSur -layout SPUD -fs HFS+J

The next step is to create a temporary disk image by typing in the following command in Terminal, then hit Enter:.

You can also launch Terminal directly from the Utilities folder.

Hit the Enter key to open the application.

Next, open the Terminal application by pressing Command + Spacebar, then typing Terminal in the Spotlight.

Save the file in that folder and make note of the file name.

When you download the MacOS installer app to the /Applications folder, it will be labeled as InstallmacOSBigSur.app or something similar.

For older macOS versions that you wish to make an ISO file of, you can check the Purchase tab of the App Store and download your preferred version from there. For macOS Big Sur, Catalina and Mojave, you can go to the Mac App Store and download the installer applications from there.

First, you need to download the macOS installer application that you want to use.

Once you’ve got everything in order, follow the instructions below in creating the macOS Big Sur ISO: It is also recommended to reboot your computer before you begin the process to remove any bugs or prevent glitches that could lead to various errors. If your internet connection is poor, it might lead to corrupted or incomplete downloading of the installation files, causing your ISO image file not to work. You also need to make sure that you have a stable internet connection to prevent the download from being interrupted. You can use a Mac cleaner, such as Mac repair app, to do a thorough job of sweeping unnecessary files from your computer. If you have a 128GB SSD, then you’ll need to delete as much junk from your computer as possible.

#CREATE MAC ISO FILE UPDATE#

For Big Sur, you need at least 35GB – 46GB of free space to download both the installer and the update files. About Outbyte, uninstall instructions, EULA, Privacy Policy.īefore you proceed, make sure you have enough room on your Mac for the installer file that you need to download.

#CREATE MAC ISO FILE HOW TO#

This guide will focus mainly on how to create macOS Big Sur ISO image file, but you can also use this same approach to create an ISO file for macOS Catalina, Mojave, and other macOS versions. Steps to Create macOS Big Sur ISO FileĬreating the macOS Big Sur ISO seems like a complicated task, but it is actually very easy as long as you follow the instructions carefully.

We’ll walk through the steps to Create macOS Big Sur ISO file and the things you need to watch out for.

#CREATE MAC ISO FILE SERIES#

app file and does not arrive as a disk image, you need to follow a series of steps involving commands or third-party apps to create a MacOS ISO file. This is especially useful when the typical method of creating a bootable installer drive for macOS is not possible. This format can be used for creating an alternative installer media, whether on an SD card, USB drive, or external hard drive. They can be handy for installing macOS into virtual machines, such as VirtualBox and VMWare, because the resulting installer is an ISO image. Some advanced Mac users might also want to create an ISO image file of the macOS Big Sur installer file or other macOS installers for that matter. But if you’re in the middle of somewhere where internet connection is not reliable and you need to reinstall macOS, it helps to have a bootable ISO image file in cases of emergency. The first method is ideal if you have a strong and stable internet connection.

#CREATE MAC ISO FILE INSTALL#

There are two ways to install macOS Big Sur on your Mac: using Internet Recovery and using a bootable ISO file.