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I've downloaded Windows 10 from Microsoft and want to create a bootable USB stick for a PC. I've tried to flash the image with dd, but the stick did not boot.

Then I've flashed the image with bootcamp, it didn't boot either on my PC; it did however boot on my Mac.

How can I create a bootable Windows 10 USB stick to be bootable not on a Mac, but on a PC?

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    For me Bootcamp Manager refuses completely, and Etcher says to use the Bootcamp Manager. I can't find a single piece of software for macOS that can actually be used to create Windows 10 install media.
    – Andreas
    Oct 10, 2019 at 0:46
  • I'm in this same boat. Urgently need to re-install Windows 10 since my Win box took a dump this morning and won't repair/recover. Have tried 4 times now to create a bootable USB... no joy every time despite the endless articles that explain how easy it is. I don't think a single one of those authors actually tried to use the resulting USB stick to boot their PC.
    – JVC
    Dec 3, 2019 at 19:30

2 Answers 2

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From Create a bootable Windows 10 installation USB on macOS

Step 1: download Windows 10 ISO

Step 2: install Homebrew

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

Step 3: install wimlib

brew install wimlib

Step 4: format USB flash drive as “MS-DOS (FAT)” with “Master Boot Record” scheme

Step 5: open Win10_21H1_English_x64.iso and copy files to USB flash drive skipping install.wim found at sources/install.wim (which is larger than 4GB FAT32 limit)

rsync -rv --exclude install.wim” /Volumes/CCCOMA_X64FRE_EN-US_DV9/ /Volumes/WINDOWS10/

Step 6: split install.wim

Heads-up: replace CCCOMA_X64FRE_EN-US_DV9 with actual Windows 10 ISO volume name and UNTITLED with USB flash drive volume name.

wimlib-imagex split /Volumes/CCCOMA_X64FRE_EN-US_DV9/sources/install.wim /Volumes/WINDOWS10/sources/install.swm 4000

Done

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I followed the instructions in Create a bootable Windows 10 installation USB on macOS:

  1. Preparing The USB drive
    Well, this was simple for my Windows 11 laptop:

    1. You firstly plug the USB drive into your Mac,
    2. Open Finder.
    3. Open the Applications folder (for example by selecting Go > Applications from the menu bar) and look for a folder named "Utilities".
    4. Double-click it and search for the Disk Utility app.
    5. Launch it and in the sidebar, search for your USB drive by name and select it (NOTE: the USB drive's name is originally "Unnamed" unless changed by a user).
    6. You then must find the Erase button located on the top right. Click it and select FAT/FAT32 as the format and “Master Boot Record” as scheme.
    7. When done, double-click the USB drive icon on the desktop to open it.
  2. Preparing The Media
    Next, head to this link and download the ISO file. Once this file is downloaded, mount it by double-clicking it.

  3. Moving Files
    Follow these instructions carefully:

    1. On the ISO file window, open the folder named 'sources'.
    2. Once in the folder, do Cmd+A and search for the file named install.wim and do Cmd+click to deselect it.
    3. Do Cmd+C
    4. Switch to the USB drive window and make a folder named 'sources', double-click it, and do Cmd+V.
    5. Now, on both the ISO file and USB drive windows, click the back button to go to the root folder and move all files except the 'source' folder from the ISO file window to the USB drive window. When the file moving is done, you can eject and unplug the USB drive.
  4. Installation Process

    1. Plug the USB drive into the corrupted or empty computer and go to your boot selector by turning on your device and holding Esc down.
    2. After you see the startup menu, use the key combination that it says beside select boot device or boot selector or boot options.
    3. When you're done, then select the USB drive. Once down click Continue and unplug the USB drive.
    4. Plug the USB drive into the Mac, open Disk Utility again select the USB drive, erase it but this time choose ExFAT as the format. Once done, copy all the files from the ISO drive into the USB drive.
    5. Eject the USB drive and plug it into the Windows machine again.
    6. Then Click Install or the button in the middle of the screen and keep the USB plugged in until you have finished setup and are at the Desktop.
  5. Final Setup
    Finish setting up Windows and done!

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  • Hi @SadGaming and welcome to Ask Different! This question is about making a Windows 10 USB installer but your answer (except for the link at the top) addresses making a Windows 11 USB installer. Perhaps you could edit the steps and the download link to refer to Windows 10 specifically? If you like, you could also add an addendum explaining that the same process could be applied using a Windows 11 ISO.
    – HeckFinlay
    May 15 at 13:31

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