Create Bootable Usb For Mac On Windows

If your Mac computer cannot get into the system due to file corruption, hardware errors, or failed updates, you can fix these issues with a macOS bootable USB flash drive. This is one of the main reasons why you should consider creating a macOS bootable USB flash drive when your device is operational. But if your Mac stops working, you can use your Windows PC to save your Mac device. You can quickly create a USB installation disk on Windows 10, Windows 8.1 or Windows 7 to reinstall macOS on Mac (Big Sur, Catalina, Mojave, High ierra) on mac. In this article, Windows 10 is used as an example.

Introduction to macOS systems

MacOS is Apple’s own third generation desktop operating system, the first two generations known as Mac OS X and OS X. All new Mac computers come with macOS systems, including MacBook, MacBook Air, MacBook Pro, iMac, Mac Pro, and Mac Mini. MacOS was released in 2016 and currently includes five versions: macOS Big Sur, Catalina, Mojave, High Sierra and Sierra.

macOS installation file

Normally, operating system installation files are encapsulated in ISO files. But macOS is completely different, with macOS installation files in two different forms: one in the form of a Mac app and the other in the form of a .dmg file. On Mac computers, you can download the macOS installer app directly from the Mac App Store and install macOS as a graphical interface. This approach is mainly used for upgrading systems, such as from Mojave (10.14) to Catalina (10.15). This can only be done on Mac computers. If your Mac computer does not boot or does not get to the desktop, you will need to download the macOS dmg file and use it to recreate a bootable macOS hard driveStick. It can be USB stick or DVDs. You can do this on your Windows PC.

Windows 10 systems and DMG files are not compatible.

The DMG file is a macOS disk image file that is very similar to an ISO file. These disk images usually contain installation files for macOS applications and are used to store compressed files, like macOS installation files. Obviously, you will not be able to install and run the application on Windows because Windows 10 only supports image files that are stored in .iso. If you want to create a bootable macOS disk from a dmg file, you will need to use third-party software to do so.

Requirements for creating a bootable macOS hard disk:

Before you dive into this tutorial, you need to prepare the following:

  • 16 GB or more USB flash drive
  • macOS copy (DMG file)
  • a Windows 10 computer
  • UUByte DMG Editor software

Note: You can also use DVDs as storage media. But there is no DVD drive on the new Mac computer, so you need a DVD drive with a USB port to help you install. For this reason, we recommend you to use a USB flash drive.

How to make a bootable macOS USB stick under Windows 10

UUByte DMG Editor is a Windows-based platform to create a bootable macOS hard drive. It can burn macOS installation files (.dmg) directly to USB flash drive or DVD. Once the burning process is complete, a macOS installation disk has been successfully created and you can use it to install or repair your Mac computer. The whole process is simple due to the protection of the graphical interface. To make a bootable macOS USB flash drive, read the following steps: Step 1: Download and install UUByte DMG Editor on Windows 10 computer. Step 2: Connect your USB flash drive to your Windows 10 computer. If you have important data on your USB flash drive, remember to backup it in advance as everything in it will be deleted. Step 3: Run the UUByte DMG Editor software and click the Next button in the Burn section to enter the burning interface. Step 4: Click the Browse button to load the macOS dmg file into the software and select the inserted USB flash drive. Step 5: Click the Burn button at the bottom of the interface to burn the DMG file to USB stick. You need to wait about 10 minutes for this process. After you finish these steps, you can plug the USB stick on your Mac computer and follow the on-screen instructions to install macOS on that Mac.


Since different macOS systems protect different modules, you may encounter problems with the final bootable macOS disk. When these problems occur, refer to the following methods to fix them. Missing partition table: If you get this prompt when importing a dmg file, there is a problem with the file. You need to download another version of macOS dmg file again. USB stick is not recognized: If you are using a USB system that is HFS plus or APFS plus, you need to format it as a file system (FAT/FAT32/NTFS) that is supported by Windows 10. USB flash drive does not appear on the boot device: First, make sure that the dmg file is complete. If the file is corrupted, the burned USB flash drive will not be recognized as a bootable device, and we recommend that you download the dmg file from the official Apple website. Also, check if the formatted USB stick contains the MBR partition and format the GPT partition using the diskpart command if necessary.

The bottom line

These are the ways to create a bootable macOS hard disk on Windows 10. We hope that it will provide you with the available information. If you have any concerns or questions, please feel free to contact us below in a comment or email.

Additional reading

The topic of USB boot sticks is almost as old as the USB standard itself. Whether you need a recovery medium for Windows or macOS or even want to install a fresh system, every now and then you need a bootable USB stick. There are tools for all systems (we have already presented some of them to you), but a cross-system solution has been missing until now. Etcher changes that: The tool creates bootable USB sticks as well as bootable SD cards (important for the Raspberry Pi and more) from arbitrary ISO files. But that’s not all: Etcher runs under Windows as well as macOS and Linux – and each with the same, tidy user interface.

Etcher: Open source and reliable

Etcher is an open source project from In my tests, I used it to create bootable media with Ubuntu, Windows 10, as well as the Pixel-OS presented by Christian, among others. Whether stick or SD card, whether under Windows or macOS (Linux I could not test 😉 ), booting always worked. Especially for Raspi hobbyists, the tool is terrific, because it can also write to SD cards. The best USB sticks: 44% (* = affiliate link / image source: Amazon affiliate program) (* = Affiliate link / Image source: Amazon affiliate program) 21% (* = affiliate link / image source: Amazon affiliate program)

1. download and install Etcher

Download the latest version of Etcher and install it on your PC or Mac. You can find it on the download page of the project.

2. select image for boot stick or boot card

The interface of Etcher consists of only one screen. Click after the start on Select Image. In the now opened selection dialog you navigate to the downloaded ISO file that you want to burn to a bootable medium.

3. select target drive

Now connect the boot stick or insert the SD card from which you want to boot later. Afterwards click on Select drive. Here Etcher lists the available options. CautionEtcher advertises the fact that it does not list internal hard disks, but this does not apply to external disks. In the example, the program shows my external Time Machine disk. Since Etcher deletes the erases the target mediumyou have to be careful which drive you select here. In the example I install Pixel-Linux on a SD card.

4. transfer ISO to SD-card or USB-stick

That was it! Now click on FlashEtcher will start working. The tool deletes the data on the target medium in one go and then writes the selected ISO to the stick or card. A progress bar keeps you up to date, and Etcher also checks at the end whether all data has arrived cleanly on the boot stick. If everything fits, you can boot another PC, Mac or a Raspi. All in all, a very nice all-in-one solution that is especially useful for people who work with multiple operating systems. Freelance journalist, technology enthusiast since the Amiga days, Apple fan on the desktop and Android fan on the road, gambles under Windows, can’t do without music (from classic rock to ska to punk) and audio books, likes to shoot postcard photos, always has at least two cell phones with him and is very happy about a coffee donation 😉 A bootable USB stick is accessed by a computer with no operating system installed. © Devenorr / Getty Images New computer, new SSD or repair: there are good reasons to create a bootable USB stick with Windows. What this is and how you can create an installation medium from a USB stick in just a few steps is explained in this guide. “Booting” is the English term for “starting up”. Normally, the computer starts or boots from the internal memory, i.e. the SSD or hard drive. A bootable USB stick is therefore nothing more than a USB stick from which a computer can boot or install an operating system. In the past, this task was performed by an installation CD. Today, however, most PCs no longer have a DVD drive, which is why a bootable USB stick is a welcome stopgap in most households with computer problems, when nothing works anymore and reinstalling is the last option.

Create bootable USB stick: Windows

To create a bootable USB stick for Windows installation, you need four things:

  1. An 8 gigabyte USB stick that does not contain no data data on it.
  2. A computer on which Windows 10 is running.
  3. The Windows Media Creation Tool.
  4. A stable Internet connection.

The creation is then just a formality: insert the empty USB stick into the computer. After that, first download the Media Creation Tool from the official Microsoft website and start it as administrator. First confirm the license agreement and then select the tab “Create installation media for other PC“tab. Click on continue. After that, a window will open where you can select which version of Windows you want to install on the USB stick. The default is the ideal Windows for the computer you are currently working on. Remove the checkmark from “Use recommended options for this PC” if you want to use Windows in another language or with 32-bit architecture. Click on “Next” again. After that, you can choose whether you want to download a disk image of Windows to your computer or whether the tool will create a bootable USB stick right away. Select the option “USB memory stick” and click “Next” again. After that, you should see your USB stick in the selection bar. If not, click on “Refresh drive list“. Select the USB stick and click “Next” again. The media creation tool will now download the appropriate Windows version, check it and create the bootable USB stick. Click on “Finish”. After that the USB stick is ready to be used as an installation medium.

How do I create a bootable USB stick for Windows 10?

  1. Empty 8 gigabyte USB stick into the PC.
  2. Download the media creation tool from Microsoft, install it and open it.
  3. “Create installation media for other PC”, select.
  4. Tick at “Use recommended options for this PC” uncheck and select desired Windows version.
  5. “USB memory stick select.
  6. Select the USB stick in the selection bar, if necessary “Update drive list”.
  7. Media creation tool downloads Windows and creates the bootable USB stick.

Install Windows

Now to install Windows on a computer without operating system, you just need to insert the USB stick into a computer and turn it on. The PC usually recognizes the USB stick automatically and the installation process begins. It gets a bit trickier if you want to reboot Windows. Then you may have to change the boot order in the BIOS. You can get into the BIOS by clicking F12 or the Delete key while the computer is booting. In the BIOS settings, you can then specify from which storage medium the computer should boot. Here you then select the USB stick, save the setting and restart the computer. During the Windows installation process, you can then format the hard drives or SSDs and install Windows on them. Also, have your Windows key ready, because it will also be requested during the installation.

How big does a bootable USB stick for Windows 10 need to be?

A bootable USB stick for Windows 10 must be at least 8 gigabytes in size. In addition, there must be no more data on the USB stick.

Which operating system for USB stick?

If you want to use Windows on the go from a USB stick, Windows to go is a good choice. Unfortunately, this is only available in the enterprise version for companies. Private users have to rely on a Linux distribution. Peppermint OS, for example, is suitable for a USB stick with Linux because it uses very few resources. However, it requires other software, namely a tool called Rufus. The setup is as easy as with Microsoft’s media creation tool.

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  • Windows
  • Computer
  • Windows 10

Changing this control will reload the page Use the Boot Camp Assistant to install Windows 10 on your Intel-based Mac. You’ll need an external USB drive to install Windows on older Mac computers. For information about whether your Mac requires an external USB drive, see the “More Information” section in the Apple Support article Installing Windows 10 on a Mac with Boot Camp Assistant. If you’re using a newer Mac model that doesn’t require a USB drive, follow the instructions in Installing Windows on Your Newer Mac with Boot Camp instead.


  • The keyboard and mouse/trackpad that came with your Mac. (If these are not available, use a USB keyboard and USB mouse).
  • An external USB 2 flash drive with at least 16 GB formatted in “MS-DOS (FAT)” format.To format an external USB drive in MS-DOS (FAT) format, use Disk Utility under “/Applications/Utilities”. In Disk Utility, select “View” > “Show All Devices”. Then select the USB device in the sidebar and click “Delete” in the toolbar. In the dialog box enter a name for the drive, select “MS-DOS (FAT)” from the “Format” pop-up menu and then “Master Boot Record” from the “Scheme” pop-up menu. After that, click “Delete.”
  • A full 64-bit version of Windows 10 on an image (ISO file) or other installation media.You can download a Windows 10 image (ISO file) from Microsoft.
  • Sufficient free space on the boot volume. For information on how much free space is required, see the Apple Support article Installing Windows 10 on a Mac with Boot Camp Assistant.

Perform the installation

Follow the steps below in the order given.

Step 1: Check for updates

Install any macOS updates before installing Windows.

  1. Log in to the Mac as an administrator, quit all open apps, and log out all users who are logged in.
  2. Choose “Apple” > “System Preferences”, click on “General” in the sidebar, and then click “Software Update” on the right. (You may need to scroll down).
  3. Install all available macOS updates.

If your Mac restarts after installing an update, open “Software Update” again to install more updates.

Step 2: Prepare your Mac for Windows

Boot Camp Assistant will help you prepare your Mac by creating a new partition for Windows called BOOTCAMP. It will then load the Boot Camp support software. Important: If you are using a Mac notebook, plug it in before proceeding to the next step.

  1. Connect an external USB drive or the flash drive to the USB port of your Mac and leave it connected while installing Windows and the Windows support software.
  2. Open the Boot Camp Assistant on your Mac under “/Applications/Utilities”.
  3. Click “Continue” on the introductory screen.The system will check for total available space. Older Time Machine snapshots and cached iCloud files will be removed to make room for Boot Camp. It may take a long time for the process to complete (you can click the Stop button to skip this process).
  4. Select all tasks under “Select tasks” and click “Continue”.
  5. To create a bootable USB drive for Windows installation, select the Windows ISO image and then select a target USB drive. Then click “Continue”.The Windows files will be copied to the USB drive. It may take a long time for the process to complete (you can click the “Stop” button to interrupt this process).
  6. Select a partition size under “Create a partition for Windows” by moving the partition division between the macOS and Windows partitions. If multiple internal hard drives are installed, you can select another hard drive with macOS and create a partition on it that will be used only for Windows.Important: You can’t change the partition size later.
  7. Click on “Install”.

When this step is finished, the Windows installation will start.

Step 3: Install Windows

  1. Follow the instructions displayed by the Windows installer.
  2. When prompted for the Windows installation location, select the BOOTCAMP partition (you may need to scroll through the partition list to see this partition). Then click “Next.”CAUTION: Do not create or delete a partition or select another partition. Otherwise, you may delete the entire contents of your macOS partition.
  3. Continue to follow the on-screen instructions to complete the installation of Windows.After installing the Windows software, your Mac will automatically restart with Windows.
  4. Follow the on-screen instructions to set up Windows.

Step 4: Install Boot Camp with Windows

After installing Windows, it will start installing the Boot Camp drivers that support your Mac hardware.

  1. Follow the instructions displayed by the Boot Camp installer on Windows.Important: Do not click “Cancel” in any of the installation windows.Click “Continue Anyway” if you see a message that the Windows logo test failed. It is not necessary to respond to messages from the installer, which will only appear briefly during the installation. However, if you are prompted to install device software, click “Install”. If nothing appears to be happening, check to see if there may be other windows overlapping a window waiting for your response. Minimize open windows.
  2. When the installation process is finished, click “Finish” and then “Yes” to restart the Mac.
  3. After restarting the Mac, follow the displayed instructions of other installers.
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Thank you for your feedback. Create a working Apple Mac USB boot stick under Windows If the Mac OS X should not start and you do not have a BOOT CD or stick at hand, it is unfortunately very tricky for Apple users. Normally Windows PC’s can’t read and write MAC CD’s or Stick’s. (iMac, MacBook Pro, Air, Mac Pro or Mini) Here I show, how by a small trick, it is nevertheless possible to create a functioning OS X Bootdevice under Windows. For example “OS X Yosemite”.

Things to consider

Before you start this HowTo, you should consider the following:

  • You have a Mac computer with OS X
  • You have the possibility to download the program TransMac
  • You need a USB stick with 16GB memory
  • A copy of an Apple Mac OS X in .DMG format

Only after you have met all the conditions, you can start creating a Mac OS X boot stick.

Prepare the Mac OS X boot media

Before you can use TransMac, you have to create a GPT partition on your USB stick, because with the Windows typical MBR, the stick will not boot in the Mac. For this you need the Windows system tool “Diskpart”.

  1. Open the the Windows Shell (CMD) with admin rights.
  2. Start the program diskpart
  3. Using list disk all installed data media can be determined
  4. Select the correct USB stick via the prefixed number using select disk from the list. For example select disk 3)
  5. Next enter the command clean command.
  6. Convert the partition format using the command convert GPT.
  7. Now you have to create a primary partition by entering create partition primary to set the boot partition

After converting the USB drive from MBR to GPT format, you can create the Mac OS X installation media.

  1. First download and install the tool TransMac. This small program makes the impossible possible. TransMac must be purchased for about 59$, however, the developer allows a trial version with a runtime of 15 days. This should be enough to create a stick in any case to burn a .DMG on the USB stick. Of course you can still support the developer and just buy the software 😀
  2. Now insert a USB stick, preferably a USB-3 capable one, into the Windows PC. Note that the stick will be formatted and thus completely erased.
  3. Do a right click on the TransMac icon and choose in the following context menu the entry Run as administrator. Confirm the security question with a click on the button Yes.
  4. On the left side you see all connected drives. Here you should also find your prepared USB stick. In my case here under the drive letter H: to find. Make a right click on the corresponding entry and choose in the context menu the menu item Restore with Disk Image.
  5. In the following message box confirm the correctness with a click on Yes.
  6. Now you have to restore the previously provided .DMG image from the Windows file browser and confirm with OK to create the bootable USB media.Now you have to wait. In the meantime, vacuum, clean the windows and go shopping at the local supermarket. It can take up to one or two hours until the boot stick is ready.

Once the OS X boot stick is ready, quickly label it and then insert it into a free USB slot in the Mac. Option key and switch on the Mac. Now you should see another entry in the boot menu and the reinstallation of Mac OS X is ready. If you have problems, try a USB stick of another brand. I used an INTENSO stick for this purpose. Unfortunately it is normal that not every stick is suitable for booting into every PC/Mac. And don’t be surprised if Windows sees the stick as defective and even wants to format it. That is correct!

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Phone: Create Bootable Usb For Mac On Windows.

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