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.
Making bootable and installable Hackintosh USB with UniBeast. Note: Make sure the bold text is exact the same. Change DMG file to InstallESD.dmg. Open the dmg file and drag the Install OS X Mountain Lion.app to Applications. Unmount the InstallESD.dmg. Jun 26, 2019 In the past, I was using the tonymacx86 software called Unibeast to create a bootable USB installer for mac. I was thinking that was the quickest way to create a bootable USB Flash Drive. Similar to Unibeast you can use the DiskMakerX too, it is also an interesting software which can do the job. If you only need to install Chimera- 'On the other side my laptop needs a unibeast drive to access it and install chimera all over again.' , you don't need to create a DMG, you can simply put the Chimera stand-alone installer on a USB drive and install Chimera. To be honest, what you're trying to do doesn't really make much sense. This tutorial will work for any version of macOS. If you want to use different versions of Unibeast for High Sierra or Mojave for example, you can download t. Create Unibeast Usb From Dmg Mac 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.
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.
DMG Editor - Make Bootable USB from DMG File on Windows
It is not easy to find an user-friendly application when it comes to make bootable macOS Install USB. That's the reason why we spent months to develop such an app. Our latest product, DMG Editor, is a fairly robust application for creating bootable USB from a DMG file. And it works well on both Windows and Mac platforms.
It is packed with modern UI and the steps are very step to follow. After several mouse clicks and wait a couple of minutes, a bootable macOS USB is ready for OS installation or system repair. You won't find any other applications on Windows that is better than UUByte DMG Editor!

Step 1: Download UUByte DMG Editor setup.exe from this website and follow the prompt to install the software on a Windows PC. Currently, it works well on Windows 10, Windows 8 and Windows 7.
Step 2: After installation, UUByte DMG Editor will be opened automatically. And you will see three options on the main screen. At this time, click 'Burn' tab And you will be lead to a new window.
Step 3: Insert an USB drive to Windows PC and the name will show up at the right side of USB icon. If the drive name was wrong, you can click 'Change' button to pick up the right device. Next, click 'Browse' button to add the .dmg file into the program.
Step 4: When the dmg file is loaded from local hard drive, click 'Burn' button to start burning dmg to USB drive. This process will be finished in less than 10 minutes and you have to wait before you can do anything with the device.
You will be notified when the burning task is completed. Now follow the link listed on the screen to start installing macOS from USB drive
.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.
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:
All of these methods are workable, so select the right one for you based on your level of knowledge and your preference.
There are numerous ways to create bootable USB installer for hackintosh, most of them are Chameleon based and Unibeast is just one of them. The installation process is quite simple if you bought your copy from App store. Download Unibeast and just follow tonymacx86 instructions and you are good to go. But you should consider that tonymacx86 is not an open source and therefore is not in OSx86 spirit. Also apparently he stole the code from qoopz , nawcom , AnV and few others that made the legacy kernel. Here is one great explanation why you should not use tonymacx86, and here is another.
But there is another way to install it and even more, it supports raw installESD.dmg instalation, it’s called myHack, it’s Chameleon based USB Instaler + after install utility. MyHack functionality is more less the same as Unibeast + Multibeast, just simplier and better…
When installing Mac OS X, it would be a good idea to use one extra hard disk drive for the installation, to preserve your old operating system, just in case something goes wrong.
You will need USB stick, minimum 8GB, all the data will be erased, so back it up if needed and format back after finish installation.
Also working OS X SL 10.6.8 or Lion is needed to make a bootable Mountain Lion USB. (if u don’t already have a working OS X and using Windows, you can download, burn and temporary install iatkos L1 ISO image (search torrents) and install it like shown on this tutorial (drivers selection depends on your hardware).
Second option, if you are using Windows is to install Snow Leopard or Lion on a virtual machine (Virtual Box), and run Unibeast on there instead. Virtualbox Extension Pack will be also needed to view USB drives from vm. This method will probably not work if your computer uses an Ivy Bridge processor.
Create Unibeast Usb From Dmg Drive
With working OS X SL or Lion you can buy and download Mountain Lion from the App Store. If you’ve already bought it you can navigate to the Purchased tab and grab it from here. Once it’s downloaded the Installer will pop up but instead of running it just close it.

Unibeast Create Usb From Dmg
Use myHack to create your bootable USB installer