To create a bootable USB drive from a DMG file on Windows, you will need to have the right utility. That's because DMG is not native on Windows. It is the Mac equivalent of an ISO file that has been in use since Apple transitioned from the IMG format with Mac OS X. A DMG file, like ISO, can be used to install macOS operating system or Mac apps. If the Mac computer was broken or crashed and couln't get into the system, but you only have access to a Windows PC, there's still a way to make a bootable macOS install USB on Windows.

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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. Mar 03, 2010  commands 1. Dmg to iso hdiutil convert /path/imagefile.dmg -format UDTO -o /path/convertedimage.iso 2. Iso to dmg hdiutil convert /path/imagefile.iso -format UDRW -o /path/convertedimage.dmg. First you need to convert the.dmg image to a raw image: hdiutil convert foo.dmg -format UDTO -o bar.img (Note: change directories to the one with the dmg file (if in Desktop do first: 'cd Desktop'), and change 'foo' and 'bar' with the filename) Add Tip Ask Question Comment Download. # Creating a temporary disk image of 6 GB space in /tmp/ and mounting it # File system has been set to HFS+ Journaled for maximum compatibility. # This can be set to APFS on newer systems, or you can convert your file system to APFS post installation. How do I convert DMG files to IMG files? I am trying to use 'Q emulator' to run XPpro and it requires an IMG file of the XP disc.(legal copy) I'm using a late model G5 PPC with Leopard 10.5.8.

1. Sep 09, 2009 Convert an ISO file to DMG format. Hdiutil convert /path/imagefile.iso -format UDRW -o /path/convertedimage.dmg. This tip is particularly useful if you have a CD/DVD burner on a Mac (or PC) and not a PC (or Mac) and you need to burn a disk image using the other machine.
2. May 01, 2009  This will work for an IMG file or DMG. I stumbled on the need for this after creating a DVD on my Macbook and wanting the generated IMG file to be in a standard ISO format. Just use the command line: // for IMG files. $ hdiutil convert input.img -format UDTO -o output.iso // for DMG files. $ hdiutil convert input.dmg -format UDTO -o output.iso.

This article looks at three applications that you can use to create a bootable USB drive from a DMG file in Windows. All of them have their advantages and disadvantages, which we have highlighted. You can make the best choice for you based on the information provided below. They are in no particular order of preference.

TransMac - Make DMG File Bootable USB on Windows

This is a fairly robust application for creating bootable USB on Windows from a DMG file. However, there's a preparatory step to be executed before you can create the bootable USB drive. The typical disk partition used is MBR, but you will need to do a partition with GPT for this to work. You can do so by executing the diskpart command in Windows CMD. Alternatively, you can do it from within TransMac, as shown in the instructions shown below the next paragraph.

Only use this installer if you see this alert message from iTunes 12.1 or later.Sep 16, 2015File Size: 121.3 MBRequirements:Windows XP SP3 or later400MB space requirediTunes 12.0.1Requirements:OS X 10.7.5 or later400MB space requirediTunes 12.0.1 Windows 64-bitRequirements:OS X 10.6400MB space requiredWindow 7 required for iTunes Extras iTunes 11.4 Mac OS XRequirements:OS X 10.6400MB space requiredat-least OS X 10.7 and 10.9.3 required for iTunes Radio and iTunes Extra respectively. ITunes 10.7 for Windows 32 and 64-bitRequirements:Windows XP SP2 or later, 32-bit Windows Vista, or 32-bit Windows 764-bit Windows Vista or Windows 7 require the iTunes 64-bit installer iTunes 10.6.3Requirements:Mac OS X 10.5.8Apple Safari 4.0.3 or later iTunes 10.6.3 for Windows 64-bitRequirements:Windows Vista 64 bitWindows 7 64 bitNote: iTunes does not support 64-bit Windows XP. Only use this installer if you see this alert message from iTunes 12.1 or later.Aug 1, 2016File Size: 134.7 MBRequirements:Windows XP SP3 or later400MB space requirediTunes 12.1.3 for WindowsSep 16, 2015File Size: 122.4 MBSep 16, 2015File Size: 108.8 MBRequirements:Windows XP Sp 3 or later400MB space required iTunes 12.1.3 for Windows 64-bit (for older and low-end video cards)Read this before installing this version:This iTunes installer is for Windows XP/Vista 64 bit systems that are unable to support iTunes video playback requirements on older and low end video cards. ITunes 11.1.5 for Windows 32-bitRequirements:Windows XP SP2 or later32-bit Windows Vista or 32-bit Windows 7, and Windows 8 iTunes 11.1.1 for Windows 64-bitRequirements:64-bit Windows Vista, Windows 7, or Windows 8400MB space requiredScreen reader support requires Window-Eyes 7.2 or later iTunes 10.7Requirements:Mac OS X version 10.6.8 or laterApple Safari 4.0.3 or lateriTunes in the Cloud and iTunes Match availability may vary by country. Itunes 10.7 mac dmg.

Once this is done, you can download TransMac and use the two-week free trial period to get the job done free of cost. You can always upgrade if you like the utility and want to keep using it after the trial period has ended. Once you download and install the application, insert your formatted USB drive and follow the instructions below:

Step 1: If you haven't formatted the USB, right-click on your USB drive in the left panel and select Format Disk for Mac from the contextual menu.

Step 2: Right-click again on the drive in the left panel and this time select Restore with Disk Image.

Step 3 : Select the DMG file and click on Open. Once the process is complete, you can eject the drive and use it on a Mac. To boot from this media, hold down the Option key and fire up your Mac.

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 to that. Still, it's an effective way to create bootable media for a Mac computer. Here's how it works:

Step 1: Once you have the macOS install DMG file on a Windows PC, click on Windows + R to open the run dialog box, and type in CMD, then hit Enter. When the Command Prompt opens up, use the following command to convert the file to ISO:
hdiutil convert /path/sourceimagefile.dmg -format UDTO -o /path/targetmage.iso

Step 2: Download and install UUByte ISO Editor on your PC, insert the USB drive and launch the application.

Step 3: Click Burn button on the main screen and point to the converted ISO file. The drive will be automatically detected and click on Burn icon to burn the ISO to the USB drive.

Once the ISO is burned to the file, you can insert it into a Mac and convert it back into the DMG format. Since you're converting the file twice, there's a chance that the file could get corrupted in the process. If that happens repeatedly, then try this next method.

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PowerISO: Make Bootable Mac Install USB on Windows 10/8/7

This Windows utility allows you do create bootable USB from DMG on a PC. You can also edit the DMG or extract the contents, and there's also an option to copy it to a disk. For this particular exercise, we'll show you how to use PowerISO to create a bootable USB drive on Windows without having to convert the disk image into another format like ISO.

Step 1: Download and install the application on your PC.

Step 2: Insert your USB drive and launch PowerISO.

Step 3: In the Tools menu, select 'Create Bootable USB Drive… '. You will need to give admin privileges to the software. Alternatively, you can run the program as admin when you launch it.

Step 4: Select the USB drive in the section called Destination USB Drive.

Step 5: Leave all other default as they are and click on 'Start' to burn DMG to the USB drive.

You should be able to see the progress, and a new popup will appear when the bootable media is ready. You can now eject the media and use it to run the DMG on a Mac computer.

Conclusion:

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All of these methods are workable, so select the right one for you based on your level of knowledge and your preference.