If your Mac suddenly refuses to boot up properly, you might need a bootable macOS USB installer to make repairs. But how do you create such a disk if all you're left with is a Windows 10 computer? Fortunately, there's a great tool that you can use for free to create bootable macOS media on a USB drive in a Windows 10 environment. This article shows you how to download a macOS DMG file, format a USB drive using a GUID Partition Table, burn the DMG to the drive and boot your Mac from the USB. All the steps except the last one are done on a Windows 10 machine.

• How To Create A Boot Disk For Mac On Windows
• Mac Create Bootable Usb Installer
• How To Create A Bootable Disk For Mac
• How To Make A Bootable Cd For Mac On Windows

Part 1: Download macOS or Mac OS X DMG File

The first step is to get the DMG disk image file for the version of macOS that you want. You can get a copy of the latest macOS version from Apple download portal or App Store here. There are also several other direct download sites that offer various versions of Mac OS X in DMG format rather than the standard APP format that runs on Mac. Since you're working in a Windows environment, you need the DMG rather than the APP file.

Click on the 'New' button on toolbar or choose the 'File New Data CD / DVD Image' menu. Click on the 'Add' button on toolbar to add files and folders. You can also directly drag files and folders from Windows Explorer to the PowerISO window. Choose the menu 'Action New Folder' to create a new folder.

macOS DMG Download Link:

Trans Mac is a Windows application that can be used to restore dmg files and create Mac bootable USB disk. TransMac features: Open Mac format disk drives, flash drives, CD/DVD/Blu-ray media, dmg, dmgpart, sparseimage and sparsebundle files. Plug the bootable installer into a Mac that is connected to the internet and compatible with the version of macOS you're installing. Press and hold the Option (Alt) ⌥ key immediately after turning on or restarting your Mac. Release the Option key when you see a dark screen showing your bootable volumes. How to Create a Bootable Drive Using Terminal. There are two ways of creating a bootable copy of the installer. You can either use Terminal or get the job done through a free software like Recoverit to do it for you. First, let us look at how to create a bootable drive using Terminal. Steps to create a macOS Siera beta boot disk.

Part 2: Format USB Drive to GPT (Optional)

Updates (Dec 8, 2020): The latest version of UUByte DMG Editor is able to format the USB automatically, so this part is optional. Follow the steps only when the burning process failed in Part 3.

Mostly, the USB drive was formmated to FAT32 in default when being shipped out from the factory. However, FAT32 can be only used for installing OS with legacy BISO, which doesn't work for macOS. So the next step is to format your USB drive in the GPT partition style in order to burn installation files to the desired USB drive. You can do this in Command Prompt as admin. In elevated Command Prompt (Ctrl+Shift+Enter), input the following series of commands followed by Enter after each line:
Diskpart
List disk
Select Disk X (X stands for the USB drive name that appears after the previous command)
Clean
Convert GPT
Create partition primary

Part 3: Create Bootable macOS USB from Windows 10/8/7 PC

You have now formatted the partition of USB drive. It's time to download UUByte DMG Editor for Windows. Although this is a premium software, you can use the initial free trial period to create a bootable macOS USB on Windows 10. After installing the application, follow the sequence of steps shown below:

Step 1: Right-click the software icon on desktop and select 'Run as Administrator' from the contextual menu. Choose 'Run' when prompted.

Step 2: Insert your formatted USB drive, and click 'Burn' tab on the main screen.

Step 3: Click 'Browse' button to import macOS dmg file into the program. And select the USB drive name from the second row. You can also set a volume labe for that USB drive.

Step 4: Click 'Burn' button at the bottom to start the process. You will see a progress bar and wait around 10 minutes to get it done.

Step 5: Once the progress bar is at 100%, a bootable macOS USB is ready. After that, you can use that USB drive for installing macOS.

This is one of the easiest way to create a bootable macOS USB on a Windows PC. The steps are simple and instructions are pretty clear.

Part 4: Boot Mac from macOS USB Drive for Installation

Now remove the USB drive and insert it into the Mac computer. To boot from the disk, you need to hold down the option key when you hear the boot chime. This will take you to the Startup Disk Manager, where you should be able to see the USB drive. It might have a different name, but as long as it is bootable, you'll be able to see it there. Once you select it, the computer will boot from the disk and the macOS installation will begin.

Conclusion:

The whole process might look a bit complicated if this is your first time, but just follow the instructions in this article and you should be fine. That being said, you need to be careful when downloading the DMG file and formatting your USB drive. If you don't do these two steps correctly, the output drive from the UUByte DMG Editor software won't be bootable, which means you can't install macOS from that USB drive, and you may need to do the whole thing over again.

ISO image burning is rather a need when your system is compromised due to malware attack and you need to format, or you need to reset your forgotten password of your admin account. Thus if you are not fully aware of how to burn ISO image file onto to disk especially on Mac computers, this article would be the best guideline to show you the methodology. Mac besides windows computers has got certain discrepancies which makes it a bit different from others, but if you have got the right ISO image burning tool to accomplish your task, Mac computers can be as supportive as the Windows computers.

Also read: How to burn ISO file to USB on Windows

Besides, the user needs to have a basic idea of what burning of ISO image file means exactly. Well, if you are not fully aware, then you should know that ISO image files are fragmented files or achieve files of an optical disk which are compressed in the form of an Image called ISO image. It is specifically characterized by the extension it uses, that is .iso file. Thus if you want to create a Windows 10 bootable USB on mac then you have to burn the ISO image files onto the disk by segregating a partitioned zone within the disk to avail the compressed files and make them executable. The methods in this article will show you how to create a Windows 10 bootable USB/DVD on Mac . Keep reading to know them in full-length.

Method #1: Create Windows 10 Bootable USB/DVD on Mac Using Disk Utility

Instead of trying out with an external agent, it would be better to make use of the in-built application of Mac, called Disk Utility to burn the ISO image files on disk to make them bootable. It comes pre-installed with the Mac OS so you don't have to worry about its downloading and installation. Just follow the steps below to burn ISO files to USB/DVD on Mac OS X.

Step 1. Go to the 'Applications' and then 'Utilities'.

Step 2. Locate the app 'Disk Utility' from the apps available on the 'Utilities' folder.

Step 3. Now pull down the fileStep 4. Browse to the ISO image file that you want to get burnt into your specific drive and click 'Ok'. menu and choose 'Open Disk Image'. Browse to the ISO image file that you want to get burnt into your specific drive and click 'Ok'.

Step 4. Insert the empty disk, be it CD/DVD or USB with a comparable storage capacity depending upon the size of the ISO image.

Step 5. Now click 'Burn' to burn the ISO image files into the disk and wait until the burning is completed.

Cons:

• Sometimes the app might intermittently stop in between the process if the file size is too heavy.
• Errors are reported with Disk Utility. and only works with OS X 10.10 or lower.
• There are bugs issues, present while burning the ISO image files.

Also read: Top Free ISO Burner Software for Windows 10/8/7

Method #2: Burn ISO to USB/DVD/CD on Mac OS X using WizISO

Mac OS comes with a great a tool for making bootable USB/DVD from ISO, but unfortunately, it doesn't seem to work for burning ISO images to USB drives on Mac because it may comes with some sort of cryptic errors. Here we will introduce a professional ISO burning tool for your Mac OS X. iSeePassword WizISO is an astounding ISO burning tool which supports both Windows and Mac computers and give you ability to create Windows 10 bootable USB on Mac OS with easy.

It provides 5 powerful key feature including ISO Burner, ISO Extractor, ISO Maker, ISO Editor and Copy Disc based on different needs. Here in this section, we would only focus on burning ISO image to USB/DVD on Mac OSX. WizISO has been incessantly serving countless users across the internet with its exceptional service and its advanced features which makes it different from other ISO burning tools.

WizISO - Create Windows 10 Bootable USB on Mac OS X

• Just 3 simple steps to burn ISO to USB/DVD on Mac OS X without getting errors.
• It combines 5 functions: Burn, Extract, Edit, Create and Copy Disc.
• It works for both GPT (UEFI boot) and MBR (legacy BIOS/CMS boot) modes.
• It supports all types of system files- FAT. FAT 32, and NTFS.
• Supports both windows and Mac OS X.

How To Create A Boot Disk For Mac On Windows

Step 1. Get the program file downloaded on your Mac OS X. Launch it admin privileges so that you can exercise all the admin rights. (It may ask you to type the Administrator password).

Step 2. You can it combines five functions including Burn, Extract, Cretae, Edit and Copy Disc. Firstly click the 'Burn' option to open main interface and browse the ISO image source file from the source location.

Step 3. Either choose 'Create a Bootable CD/DVD' or 'Create a Bootable USB' depending upon the type of disk you are using to burn your ISO image files. Insert your USB or DVD/CD to your Mac OS X. Select your file format from the 'System File' section as FAT, FAT 32, NTFS.

Step 5. After you have chosen all your priorities, click on 'Burn' button to burn the ISO image file. It will take few minutes and your bootable disk will be created with the ISO image burnt onto the disk.

Burning ISO image files on Mac is not that difficult job to pull off unless you have the basic idea of ISO image files and have the right choice for burning ISO tools. Form the article above, you can clearly deduce that iSeePassword ISO Editor for Mac is the only reliable burning image tool with no demerits or limitations at all. It has been tested with many brands of computers and operating systems including the Mac OS, thus you can completely rely on it to burn ISO file to USB/DVD on Mac OS X without getting any errors.

Mac Create Bootable Usb Installer

Also read: How to burn ISO file to DVD/CD

Don't miss: How to Create A Bootable USB/DVD on Mac OS for Windows 10

Method #3: Create Bootable Windows 10 USB on Mac using Terminal

If you're Mac Sierra users then you must notice that Apple has stripped the function to create Windows 10/8/7 bootable USB/DVD from ISO on Mac Sierra and Macbook air. So it makes it very difficult to burn a Windows ISO to USB on Mac OS. But you still have a choice to do that by using Terminal command although it's very complicated. But there are many potential errors when burning ISO to USB on Macbook air or high sierra. Most Mac OS X cannot load the IntelMEI driver and pop up a 'Windows Setup could not insatll one or more boot-critical drivers. and restart the installation'. However, most of time it's working and your data will be copied.

First, mount the USB disk on your system then follow these steps –

Step 1. Open the 'Finder' option then 'Terminal' app. Now, type 'diskutil list' to find out which one is the USB flash drive.

Step 2. Let's say your USB drive is 'disk 2', so first we will have to format it in the Terminal app by typing diskutil eraseDisk ExFat 'WINDOWS10' MBR disk2.

How To Create A Bootable Disk For Mac

Step 3. By entering this, the app will format the USB drive and name t 'WINDOWS10' so that you can use it as an installer.

Step 4. Assuming you have downloaded the Windows 10 .ISO file and it is stored in the Downloads folder. So, go ahead and mount the .ISO by opening it. It should be named as ' CCCOMA_X64FRE_EN-US_DV9'

Step 5. Now, on the Terminal app type the following to copy the files of Windows 10 to the USB flash drive. 'cp -rp /Volumes/CCCOMA_X64FRE_EN-US_DV9/* /Volumes/WINDOWS10/' . This will take several minutes to complete but your data should be copied and the flash drive will be bootable. You can use it install Windows 10 on any desired system. Then you can be able to install your Microsoft Windows 10/8/7 system on Intel-based Macintosh computers.

Cons

• Most Mac OS X cannot load the IntelMEI driver and pop up errors on Macbook air or high sierra.
• It requires USB with at least 40 GB space
• Won't support UEFI and 64bit Windows 10 ISO.
• Command line operations, not intended for the beginner and at your own risk.

How To Make A Bootable Cd For Mac On Windows