Download and Create macOS Big Sur ISO File [Full Guide]

If you want to install a macOS Big Sur virtual machine on your computer using VMware or VirtualBox, it's crucial to have a macOS Big Sur ISO. In this article, we will guide you on how to download and create a macOS Big Sur ISO file.

Let's get started.

Before You Start

Both downloading and creating a macOS Big Sur ISO file requires more than 10 GB of storage space. If your Mac has insufficient storage space, consider using the best Mac cleaning tool BuhoCleaner for a quick and thorough cleanup to free up the necessary space.

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• Visualize your disk space usage.

How to Download macOS Big Sur ISO Files for VMware and VirtualBox

Apple primarily provides updates through the Software Update feature, and direct ISO downloads are not officially available. If you want to download a macOS Big Sur ISO file directly, you can download it from third-party resources, such as Google Drive.

Here are some download links:

• macOS Big Sur ISO Download (11.6.8)

• macOS Big Sur ISO Download (11.0.1)

How to Create a macOS Big Sur 11.7.10 ISO File for VMware and VirtualBox

If you can't find a trustworthy macOS Big Sur ISO online, creating one yourself is a viable option. Follow these steps to create a macOS Big Sur ISO for use with VMware or VirtualBox.

Step 1. Download the macOS Big Sur Full Installer

If your Mac is compatible with macOS Big Sur, click here to download the installer using the App Store.

Alternatively, you can download the macOS Big Sur full installer directly from the link below.

Download macOS Big Sur 11.7.10 Final Installer

Once the download is complete, click on the downloaded .pkg file, follow the instructions to run it, and you will find the Install macOS Big Sur app in the Applications folder.

Step 2. Make a macOS Big Sur ISO File Using Terminal

Now, you've reached the critical step of creating a macOS Big Sur ISO file, and the tool you will use is Terminal.

Here's how:

1. Open Terminal via Spotlight or Finder > Applications > Utilities.
2. Run the command below in the Terminal.

hdiutil create -o /tmp/BigSur -size 14g -layout SPUD -fs HFS+J -type SPARSE

3. Continue to run the command:

hdiutil attach /tmp/BigSur.sparseimage -noverify -mountpoint /Volumes/installBigSur

4. Paste the command below, press Return, enter your administrator password, and press Return again to make the macOS Big Sur installer:

sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia --volume /Volumes/installBigSur --nointeraction

5. When you see "Install media now available at "/Volumes/Install macOS Big Sur"," continue to run the command below to unmount the macOS Big Sur disk image:

hdiutil eject -force /Volumes/Install\ macOS\ Big\ Sur/

6. After that, run the command to format your media to .iso format:

hdiutil convert /tmp/BigSur.sparseimage -format UDTO -o /tmp/tmp_iso.iso

7. Continue to execute the following command to move the .iso file to your desktop:

mv /tmp/tmp_iso.iso.cdr ~/Desktop/BigSur.iso

8. Now you have a BigSur.iso file on your desktop, enabling you to run a macOS Big Sur virtual machine using VMware or VirtualBox on an Intel/ARM Mac.

FAQs about macOS Big Sur ISO File

Q: When Do You Need a macOS Big Sur ISO File?

A macOS Big Sur ISO file is a disk image file for macOS Big Sur. It can be used to install or upgrade your current system, make a bootable media, or install a virtual machine with VMware or VirtualBox.

Q: Can I Run macOS Big Sur Virtual Machine on an Apple Silicon Mac?

No, it is not possible to create a macOS Big Sur virtual machine using virtual machine software on Apple silicon (M1/M2/M3) Macs. Follow this guide to run a macOS virtual machine on an Apple silicon Mac.

Q: What Macs Are Compatible with macOS Big Sur?

Here are the Macs that support macOS Big Sur:

• MacBook (2015 or later)
• MacBook Air (2013 or later)
• MacBook Pro (Late 2013 or later)
• Mac Mini (2014 or later)
• iMac (2014 or later)
• iMac Pro (2017 or later)
• Mac Pro (2013 or later)

For specific models, refer to this article.