Format Usb For Windows 10 Iso Mac

Most new PCs don't come with DVD drives anymore. So it can be a pain to install Windows on a new computer.

Luckily, Microsoft makes a tool that you can use to install Windows from a USB storage drive (or 'thumbdrive' as they are often called).

But what if you don't have a second PC for setting up that USB storage drive in the first place?

In this tutorial we'll show you how you can set this up from a Mac.

You can download the ISO file straight from Windows. That's right - everything we're going to do here is 100% legal and sanctioned by Microsoft.

UNetbootin is a Windows 10 USB tool Mac that is completely free to use and can be used in a scenario wherein you have to make bootable USB Windows 10 on Mac system. For this, you need to keep a USB with the.iso file downloaded in it. Follow the steps below to know how you can use this program to know how to make a bootable USB Windows 10 on Mac.

Convert Bootable USB to ISO Image. Now Click on the Advanced tab & then Click on the Bootable Disc tab on the Right-hand side section. Now below Options enable the Make Image Bootable checkbox. Now Click on the Browse option next to the Boot Image field & then select the ETFSBOOT file from the BOOT folder present in the USB drive. The keyboard and mouse or trackpad that came with your Mac. If they aren’t available, use a USB keyboard and mouse. A full-installation, 64-bit version of Windows 10 on a disk image (ISO file) or other installation media. Mar 21, 2019 Method 1: Create Windows 10 Bootable USB on Mac Using UNetbottin. UNetbootin is a free, open source utility that allows you to create bootable USB drives on Windows, Linux, and Mac OS X. If you’ve downloaded Windows 10 ISO image, here is how you can create a bootable Windows installer USB on Mac using UNetbootin.

If you want an English-language version of the latest update of Windows 10, you can download the ISO here.

If you have a relatively new computer, you probably want the 64-bit version. If you're not sure, go with the 32-bit version to be safe.

If you want a non-English-language version of Windows, or want to get an older update version, download the ISO here instead.

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The ISO file is only about 5 gigabytes, but I recommend you use a USB drive with at least 16 gigabytes of space just in case Windows needs more space during the installation process.

I bought a 32 gigabyte USB drive at Walmart for only $3, so this shouldn't be very expensive.

Stick your USB drive into your Mac. Then open your terminal. You can do this using MacOS Spotlight by pressing both the ⌘ and Space bar at the same time, then typing 'terminal' and hitting enter.

Don't be intimidated by the command line interface. I'm going to tell you exactly which commands to enter.

Open Mac Spotlight using the ⌘ + space keyboard shortcut. Then type the word 'terminal' and select Terminal from the dropdown list.

Paste the following command into your terminal and hit enter:

diskutil list

You will see output like this (note - your Mac's terminal may be black text on a white background if you haven't customized it).

Copy the text I point to here. It will probably be something like


Next format your USB drive to Windows FAT32 format. This is a format that Windows 10 will recognize.

Note that you should replace the disk2 with the name of the your drive from step 3 if it wasn't disk2. (It may be disk3 or disk4).

Run this command using the correct disk number for your USB:

diskutil eraseDisk MS-DOS 'WIN10' GPT /dev/disk2

Then you'll see terminal output like this.

This will probably only take about 20 seconds on a newer computer, but may take longer on an older computer.

Note that for some hardware, you may instead need to run this command, which uses the MBR format for partitioning instead of GPT. Come back and try this command if step 7 fails, then redo steps 5, 6, and 7:

Now we're going to prep our downloaded ISO file so we can copy it over to our USB drive.

You will need to check where your downloaded Windows 10 ISO file is and use that. But your file is probably located in your ~/Downloads folder with a name of Win10_1903_V1_English_x64.iso.

hdiutil mount ~/Downloads/Win10_1903_V1_English_x64.iso

Update April 2020: One of the files in the Windows 10 ISO – install.wim – is now too large to copy over to a FAT-32 formatted USB drive. So I'll show you how to copy it over separately.

Thank you to @alexlubbock for coming up with this workaround.

First run this command to copy over everything but that file:

rsync -vha --exclude=sources/install.wim /Volumes/CCCOMA_X64FRE_EN-US_DV9/* /Volumes/WIN10

Then run this command to install Homebrew (if you don't have it installed on your Mac yet):

/usr/bin/ruby -e '$(curl -fsSL'

Then use Homebrew to install a tool called wimlib with this terminal command:

brew install wimlib

Then go ahead and create the directory that you're going to write the files into:

mkdir /Volumes/WIN10/sources

Then run this command. Note that this process may take several hours, you may see 0% progress until it finishes. Don't abort it. It will use wimlib to split the install.wim file into 2 files less than 4 GB each (I use 3.8 GB in the following command), then copy them over to your USB:


wimlib-imagex split /Volumes/CCCOMA_X64FRE_EN-US_DV9/sources/install.wim /Volumes/WIN10/sources/install.swm 3800

Once that's done, you can eject your USB from your Mac inside Finder. Note that Windows will automatically rejoin these files later when you're installing.

Congratulations - your computer now should boot directly from your USB drive. If it doesn't, you may need to check your new PC's BIOS and change the boot order to boot from your USB drive.

Windows will pop up a screen and start the installation process.

Enjoy your new PC, and your newly-installed copy of Windows.

Use the media creation tool (aprx. 1.41MB) to download Windows. This tool provides the best download experience for customers running Windows 7, 8.1 and 10. Tool includes: File formats optimized for download speed. Built in media creation options for USBs and DVDs. Optional conversion to ISO file format.

Many times you want to install Windows 10 on a Mac computer with the intention of running your favorite windows games, applications which don’t have a version for Mac OS, or solve some Windows issue especially for boot-related issues. Regardless of the causes, you need to first create a Windows 10 bootable USB from ISO on Mac OS. As a Mac users, you might know that Apple provides an custom-tailored solution called Bootcamp to help create a Windows bootable USB. But in fact, creating Windows bootable USB on Mac isn’t as straightforward as you think, in the creating process, naturally there will be a variety of problems.

  • Mac OS X 10.6.8 Snow Leopard is an upgrade to the previous version of OS X Leopard. This update does not have stacks of new features, rather overall improvements and efficiency upgrades. This version of Apple's OS also has a reduced footprint.
  • Step 1: Get the Windows 10 ISO from Microsoft's website and install the Mac version of UUbytes ISO Editor. Step 2: Launch Boot Camp Assistant, go to Action and click on Download Windows Support Software.

We've also received lots of emails from readers asking why Bootcamp wouldn’t allow me to use Windows 10, despite the fact that my laptop is compatible. BootCamp doesn't always work well, especially in creating Windows 10 bootable USB installation media, the most common errors you will encounter: 'failed to load BOOTMGR' or 'not Enough Space'. Another reason is Apple has already stripped the ability to make Windows 10 bootable USB in last release of Mac OS, and it is a problem because that require uses other tools. It’s believed that each software has its own pros and cons, Boot Camp is no exception. But it’s still a outstanding tool which is developed by Apple, so, this article will give priority to Boot Camp and also shows 4 intuitive approach to help you make a Windows 10 bootable USB on mac with or without Boot Cam Assistant.

Method #1: Create A Bootable Windows 10/8/7 USB on Mac with Bootcamp

As a dual-boot booting tool, Boot Camp Assistant is highly regarded in the field of creating Windows 7/8/10 bootable USB since it was released, it provides the ability to download drivers, re-partition, and add new partition on your Mac. But sometimes you will find bootcamp tool doesn't allow any customization of the process. Before using it, you need to know that your USB installation media will be formatted as FAT32 file system, which can’t store files larger than 4 GB. Let’s see how it works.

Step 1. First of all, make sure you’ve download a Windows 10, or Win7, 8 ISO image file on your Mac computer. Then you need to move ISO file to your USB drive by using Boot Cam.

Step 2. Now, insert your USB dive with at least 8GB to your Mac computer, make sure you’ve created a copy for your important file because your USB will be formatted.

Step 3. Launch the Boot Cam Assistant from Utilities, then check the two options: Create a Windows installation disk and Install Windows 7 or later version. Click Continue to proceed.

Step 4. when you go to this step, Boot Cam Assistant will detect and locate your ISO image file, click choose button to find and import the right one, and click continue. It may take some times to format your USB, please wait.

Step 5. When the process is complete, you will see that your USB drive will be renamed as WINNSTALL, this is your windows 10 bootable USB tool! Click Quit to close the app and then Eject the USB drive.

That's it! You’ve successfully made a bootable USB drive with Windows 10 OS, and you can use it to configure new Windows 10 PCs from scratch.

Method #2: Create A Bootable Windows 10 USB On Mac with PassCue for ISO

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Making a bootable USB is not as easy as copying ISO file to your USB drive,it requires professional ISO writing tool to burn it to USB drive instead of copying. For Mac users, There may have many chance to encounter some unknown errors when using Bootcamp to create a Windows 10 USB disk on Mac, like Bootcamp failed to load bootmgr, not recognizing iso or usb not enough space,etc. So you desperately need to find a way to create bootable USB without Bootcamp.

Fortunately, PassCue for ISO is a wonderful tool which can burn, create, edit and extract ISO files from any files, folders and operating system files. It has been adopted on a large scale by various users and widely recommended. It provides 5 key functions for your ISO operations including: Burn ISO, Extract ISO, Edit ISO, Create ISO and copy disc, it works very effectively in both Windows and Mac OS.

Step 1. Get the software downloaded from above button and install it on your Mac with proper step instructions. Launch the tool with admin privileges to enable every kind of possible authorities. Once the tool screen turns up, you should see there are five functions including Burn, Extract, Cretae, Edit and Copy Disc. To make a Windows 10 bootable USB, then you need to choose the first option “Burn” and next.

Step 2. As you can see, you’re allowed to create a Windows 10 bootable disk with USB drive or DVD/CD, here, just insert your USB drive to your Mac, then import ISO file by clicking browse button. Select your file format from the 'System File' section as FAT, FAT 32, NTFS.

Step 3. In the partition style, it provide two mode to choose based on your ISO file: MBR or UEFI. If MBR won’t boot, then change UEFI mode to create again. When all settings are complete, click Burn button to begin, it will take 5 - 10 minutes to complete the burning process.

Step 4. When the burning is complete, you can open your USB drive and see there are many boot files inside it. Take out of your USB drive and try to install Windows OS on your other computers.

As you can see, this method is so easy and safe! Never damages your ISO file. If you don’t find the method satisfactory and have plans to try out a different approach, you are most welcome to do so.

Part 3 : Create A Windows 10 Bootable USB on Mac without Bootcamp

As we mentioned above, creating a bootable USB Windows 7/8/10 on mac OS isn’t as simple as you might think. You will need Terminal tool on Mac to perform some command. Before we start make sure you have an effective ISO file and have USB flash drive with not less than 4GB capacity. Here are the steps to be performed on a Mac to create a Windows 10 USB Bootable Installation Drive on mac.

Step 1. Connect your USB drive to your Mac.


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Step 2. Open a Terminal (under Utilities)

Step 3. Now you need to Run diskutil list and confirm the device node assigned to your USB flash media disk2.

Step 4. Type the following command.

hdiutil convert -format UDRW -o ~/path/to/windows-10-iso.img ~/path/to/windows-10-iso.iso

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Step 5. Replace /path/to/downloaded.iso with the path to where the image file is located; for example, ./windows10.iso). This command will convert the ISO file to IMG format.

Step 6. Type the following command to check the location of your USB drive:

diskutil list

Step 7. Next, you need to type the command to Unmount the USB drive, then replace /dev/diskX with the location of your USB drive.

diskutil unmountDisk /dev/diskX

Step 8. Finally, run the following command to create Windows 10/8/7 bootable USB on Mac.

sudo dd if=/path/to/windows-10-iso.img of=/dev/rdiskX bs=1m

Step 9 . Then try to replace /path/to/windows-10-iso with the real filepath of the ISO file and /dev/diskX with the location of the USB drive. This command will take some time, and once it’s complete, you can eject the USB drive by this command: diskutil eject /dev/diskX


Once the process is complete, you can see the data will be copied and your USB will be bootable.

Part 4 : Create Bootable USB Windows 10 on Mac with UNetbootin

UNetbootin is free software and the latest release of new features in UNetbootin focuses on cross-platform technology that allows you create bootable Live USB drives for Ubuntu, Fedora, and other Linux distributions without a CD. It can run on Mac, Windows and Linux. Now, I will show a detailed tutorial.

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Step 1. Like other method 1, you can also need to check the path name of the USB drive. After you insert your USB to your Mac, open the Disk utility on Mac OS X, select the USB drive from the left panel and click Info button. Write down the USB name info for the next usage.

Step 2. Now, you need to download UNetbootin tool then install it on your Mac, launch it. And copy the app to the /Application folder. Select the Diskimage button and import your ISO image file.

Step 3. In the panel, select the USB drive in the Type option, and select your USB drive on UNetbootin. Click on the OK button and wait to the process end!

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In my opintion, It’s easy to use and doesn’t damages your system. But there still some users reported that UNetbootin is not working. Good luck to you!