Convert Dmg To Bootable Iso

  1. Burn Bootable Iso Windows
  2. Convert Dmg To Bootable Iso
  3. Convert Dmg To Bootable Iso Free

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. Convert DMG to ISO and Create macOS Boot USB from Windows. Since ISO is a better format for Windows, you can also convert the DMG to the ISO format and then use the ISO disk image to create the bootable USB. Please note that you can't boot your Mac from bootable USB made from an ISO file, which means you'll have to convert it back to DMG prior. Here’s how to convert a DMG file into an ISO file that can be mounted on a Windows PC. First head over to this website and grab yourself a copy of dmg2img by clicking on the win32 binary link. Once the file has downloaded, open your Downloads folder, right click on the file, and select extract all from the context menu.

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Home > Resources > Make Bootable USB Installer from DMG

DMG file is a compressed file format being used widely on Mac computer. Windows OS doesn't natively support DMG disk image files, so if you need to create a bootable USB drive from a DMG file, mostly for bootable Mac OS X or macOS installation USB, you need a special utility to help you complete the task.

There is also the possibility of converting the file into a format more suitable for Windows, which is the ISO file format for disk images. Considering the above, let's look at different ways to create a bootable drive from a DMG file on a Windows computer.

Part 1: Convert DMG to ISO and Make Bootable USB from ISO

Since Windows doesn't offer native support for DMG files, you can first convert the file to ISO. Why? A lot of easier to find an app for making a bootable USB from ISO file. The easy way to do this is to use Command Prompt. Don't be intimidated by the non-GUI environment even if you don't have any experience. If you follow the steps below, you can convert any DMG file to ISO and then create a bootable USB using the converted file.

Step 1: Open Command Prompt by typing cmd in the Run windows and hitting Enter.

Step 2: In the command interface, go to the directory in which the DMG file is saved. You can do this by using the 'cd' command followed by the file path, then pressing Enter. For example, if your disk image is in D: and Command Prompt is currently in 'C:', then type 'd:' (no quotes) and press Enter. If it is in a subfolder, type 'cd subfolder', and so on.

Step 3: Use the following command to convert the DMG file to ISO:

hdiutil convert /path/sourceimagefile.dmg -format UDTO -o /path/targetmage.iso

Step 4: Once the ISO file has been created, you can use a burning tool to create the bootable USB drive. To do that, continue with this guide.


  • File damged or broken after conversion.
  • Failed booting from burned USB disk.
  • May not work with the latest DMG file.
  • Complex and take more time.

Part 2: Create Mac OS X Bootable USB Installer from DMG

Androidphonesoft DMG Editor is a powerful software application for Windows that will allow you to manage the non-native DMG format even if you have no experience. The interface is uncluttered, and you can even use the tool to view files, extract them, edit the DMG and even copy it to a disk. The burn function has one of the highest success rates in the industry, which makes this an ideal utility for our purpose.

Created by the talented team of developers at Androidphonesoft, DMG Editor is currently the most intuitive Windows app for handling Apple's disk image format. Each of its functions have been tested on various Windows versions, with different types of DMG files and on different PC brands. This thorough testing means no wasted DVDs or corrupted files. As long as your DMG file is in good shape, you can directly create a bootable disk.

Step 1 Install DMG Editor

Download and install DMG Editor on your Windows PC.

Step 2 Plug in USB Drive

Launch the application and click on the 'Burn' section. You will also see other modules such as Edit, Extract.

Step 3 Load DMG File

Now import the DMG file by clicking the 'Browse' button and choose the USB drive name.

Step 4 Start Burning DMG to USB Drive

Click 'Burn' button at the bottom of window to start burning DMG file to USB drive. Once it get started, it displays a progress bar and you have to wait for the task to be finished. Usually, it takes 20 minutes depending on how large the file is.

In a few moments, your bootable USB flash drive will be ready for use. Since you haven't done any conversion, you can use this directly on a Mac for program installation, which you cannot do with the first method.

Part 3: Create Bootable USB from DMG in Windows Via PowerISO

Convert dmg to bootable iso mac

Another well-known disk image utility is PowerISO. Apart from being ideal for burning ISO files, it can also burn a DMG file to USB to create a bootable drive. There are some settings that you have to keep in mind when burning with this software, but it's easy to get the hang of it once you do it a couple of times.

Step 1: Download PowerISO and install it in your Windows PC. Launch the app and insert a USB drive into a free USB slot in your computer.

Step 2: You can import the DMG file directly by clicking on ‘Burn' in the toolbar or going to Tools >Burn. In the Burn window, select the DMG file from the Source File section.

Step 3:Now review the settings to select the burn speed. The default will be the maximum your hardware can handle, so you can reduce that. You can also choose to finalize the disk and verify it. Finalizing means you can't save any more files on the drive, but it primarily applies to DVDs and CDs. Choosing ‘Verify' will prompt the software to execute an additional process after the burning is done. Any errors in the bootable USB will show up at that point.

Step 4: Now click on 'Burn' and wait for the progress bar to reach 100%. Your bootable USB is now ready.


  • Expensive for a single license.
  • Higher failure rate for bootable device.
  • Ugly user interface.

The Bottom Line:

The second two methods are recommended if you don't have much experience working with DMG files, but DMG Editor will appeal to novices and experts alike. The clean interface and minimal user input means a lower chance of errors while creating the bootable media.

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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).

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.

Burn Bootable Iso Windows

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.

Convert Dmg To Bootable Iso

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

Convert Dmg To Bootable Iso Free

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.

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

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