If you have a DMG file of macOS Catalina or macOS Big Sur and want to install it on VirtualBox in Windows 10 then you’ll definitely need to convert DMG to ISO. So, in this tutorial, you will learn the easiest way to convert a DMG file to ISO for VirtualBox in Windows 10 for free.

Meanwhile, one of the most well-known container formats for distribution and compression of software on the Mac operating system is the DMG file format. On Windows computers, you can equate DMG files with ISO files. The main distinction is that Mac computers are compliant with DMG and Windows computers are compatible with ISO.

Choose the source DMG file you want to convert. Set the output file format to iso file. Enter the output file path name. Click 'OK' button to start converting dmg file to iso. Remember, even if you convert the DMG to ISO, it's still Mac-compatible only, so you can't use it to install the program on a Windows system. However, it's helpful when your own system is a Windows PC and you want to burn the DMG file to a USB drive. In this case, you will need to convert it back to the DMG format for the installation. You can also convert DMG to bootable ISO by going to Advanced Bootable Disc tab. From here, you can select emulation type, load segment, sectors to load, platform ID, extract boot image, etc. After setting up whole configurations, you can click on the Build button to start conversion. Now we convert the DMG disk image file to an ISO disk image file (technically a CDR file but it’s the same as an iso) hdiutil convert /tmp/BigSur.dmg -format UDTO -o /Desktop/BigSur. Finally, we rename the Big Sur CDR file extension to Big Sur ISO to convert the CDR to ISO: mv -v /Desktop/BigSur.cdr /Desktop/BigSur.iso. Now you can see the. You can open dmg file, convert it to iso file, or burn it to a CD / DVD disc. To convert it to iso file, please follow the steps, Run PowerISO. Choose 'Tools Convert' Menu. PowerISO shows Image Converter dialog. Choose the source DMG file you want to convert. Set the output file format to iso file. Enter the output file path name.

These days, downloading a Mac or Windows operating system is the most common file format. However, it would not be compliant if you want to run DMG files on Windows, and no Windows program will run it. However, you can conveniently remove all the data from the ISO image on Windows computers if you convert the DMG file to the ISO file format.

Reasons for DMG to ISO Converting:

1. DMG is not compatible with the Windows operating system.
2. You can extract files from an ISO image on any Windows operating system.
3. Load operating systems or applications on Windows machines with DMG images.
4. ISO files give Windows systems more tools to deal with.

Convert a DMG file to ISO for VirtualBox in Windows 10

There are different ways to convert a DMG file to ISO in WIndows like using PowerISO or Command prompt but we are going to use the AnyBurn app.

AnyBurn

AnyBurn is a free, lightweight, and competent CD/DVD/Blu-ray software that allows ripping and burning audio, video and ISO formats.

Creating disk files and video compilations or bootable media with CDs, DVDs and Blu-ray optical disks is simple with AnyBurn. The software is lightweight, easy to use, and has a basic interface that can be navigated by anyone.

Features:

• Burn all CD / DVD / Blu-ray disc image files.
• Burn files and folders in your hard drive to CD, DVD, or Bluray disc
• Burn Audio CD which can be played in regular CD player from mp3, ape, FLAC, WMA files…
• Rip Audio CD to MP3, FLAC, APE, WMA files.
• Copy disc using sector by sector method.
• Create image files from hard disk files or CD / DVD / BD discs.
• Convert disc image files between various formats.
• Support both 32-bit and 64-bit Windows.

So, here are the steps to convert a DMG file to ISO for VirtualBox in Windows 10, and for the purpose of this guide, we will convert the macOS Catalina DMG file to ISO File for VirtualBox:

Step 1. Download AnyBurnon your Windows computer. You can either select (32-bit) or (64-bit) as per your system.

Download AnyBurn

Step 2. Once downloaded, install and follow the on-screen instructions.

Step 3. After installation, launch the AnyBurn app and choose Convert image file format.

Convert image file format

Step 4. Click the folder icon next to Select source image file, choose your DMG file, and open it.

Step 5. Select Standard ISO Images (.ISO) next to the Select image file type option and choose Convert Now to start converting.

ISO

Step 6. Once it’s done with converting, you will see a message “Converting image file finished successfully.” click OK and Exit.

As you can see in the screenshot that the macOS Catalina DMG file is converted to ISO.

Wrapping Up

This is how you can convert DMG files to ISO for VirtualBox in Windows 10. Converting DMG to ISO might be a struggle if you don’t know how to do it properly. However, in this guide, we have shown the best way to do this without destroying the original DMG file using AnyBurn software.

Read More:

Convert Dmg To Boot Iso

In the post, we will learn How to Convert macOS Big Sur Installer to ISO. We recently discussed How to Create macOS Big Sur Bootable Installer for Clean Installation: 2 Easy Steps (MAC only) that might have helped you to create a macOS Big Sur Bootable USB.

Advanced Mac users get the freedom to convert macOS Big Sur Installer to ISO file. Normally, the resulting installer ISO file is utilized to install macOS Big Sur on Virtualbox and install macOS Big Sur on VMWare.

This tutorial will walk through the steps of How to Convert macOS Big Sur Installer to ISO.

In this specific walkthrough, we will Convert macOS Big Sur Installer to ISO.

You can also read: How to Speed Up macOS Big Sur? 7 Easy Methods

How to Convert macOS Big Sur Installer to ISO

Step 1: Download the macOS Big Sur Installer file from AppStore. You can simply follow this link and download the macOS Big Sur installer file (.app file).

Convert Dmg File To Bootable Iso

Step 2: After the download is complete, do not proceed to install the macOS. Instead, close the installer and go to your application and look out for the installer file.

NOTE: The files must be present in your application folder to proceed with this tutorial.

Step 3: Now open you launchpad, and click Terminal.

Step 4: Execute the following commands one by one.

Create an empty Big Sur DMG image using the following command:

Next step is to mount the created Big Sur DMG disk image:

Now use createinstallmedia command to create the macOS Big Sur installer application on the mounted volume:

When createinstallmedia has finished, next you can unmount the volume you just created:

Now we convert the DMG disk image file to an ISO disk image file (technically a CDR file but it’s the same as an iso)

Finally, we rename the Big Sur CDR file extension to Big Sur ISO to convert the CDR to ISO:

Now you can see the macOS Big Sur ISO file on the desktop as shown in the snapshot.

Incase you want to remove the temporary file you can use the following command:

This is not a compulsory step, and the temporary file is removed automatically after some time.

Conclusion: How to Convert macOS Big Sur Installer to ISO: 4 Step Easy Guide

You can also use this guide How to Convert Bootable ISO File to Virtual Disk VHD/VMDK: 2 Way Guide and directly use them on your virtual systems.

Now, this macOS Big Sur ISO file can be used as a bootable disk, or you can directly use it on any virtual system like VMWare and VirtualBox.

Related: How to Create macOS Big Sur Bootable Installer for Clean Installation: 2 Easy Steps (MAC only)

Remember: In most cases, the ISO file that you have generated can only be used to run on Virtual Systems like Virtualbox and VMWare. They might not always work to create a bootable disk.

You can also refer to my post- How To Create macOS Big Sur Bootable USB on Windows: 4 Easy Steps (+Video Tutorial) if you are using a Windows system.

Burn Bootable Iso Windows

I hope this article has helped you to Convert macOS Big Sur Installer to ISO.