Custom boot drive

How to create a bootable USB to install Windows 10 using Command Prompt

You can use Diskpart to create a USB bootable flash drive to install Windows 10 on any computer, and this guide, you'll learn how to do it.

Using Diskpart to create Windows 10 USB bootable flash drive

Although you can create a bootable USB to install Windows 10 using a variety of tools, including with Media Creation Tool and Rufus, it’s also possible to use the Diskpart command line tool to create a flash drive to deploy Windows 10 to any device.

In this guide, you’ll learn the steps to use Command Prompt to create a USB bootable media to install Windows 10.

How to create a USB bootable media to install Windows 10

To create a USB flash drive with the Windows 10 installation files, connect a USB flash drive of at least 4GB of storage, download and mount ISO with the installation files, and then follow these steps:

  1. Open Start.

  2. Search for Command Prompt, right-click the top result and select Run as Administrator.

  3. Type the following command to open Diskpart and press Enter:

    diskpart
  4. Type the following commands and press Enter on each line:

    list disk
    select disk 1
    clean
    create partition primary
    select partition 1
    active
    format FS=NTFS quick
    Quick Tip: We’re using the select disk 1 command as an example, but you have to replace 1 with the number of the flash drive you want to use. Also, if you’re creating a bootable media for a device that uses UEFI, you’ll need to format the drive using FAT32, instead of NTFS with this command: format fs=FAT32 quick.
  5. Type the following command to assign a volume and a drive letter for the USB flash drive and press Enter:

    assign letter=X

    In the command, change X for any available letter you want to use.

    Diskpart commands to create bootable USB on Windows 10
    Diskpart commands to create bootable USB on Windows 10
  6. Type the following command to quit the tool and press Enter:

    exit
  7. Type the following command to get into the boot folder located in the root of the Windows 10 ISO and press Enter

    g:
    cd boot

    In the command, change G for the letter of your mount drive as it appears in File Explorer.

  8. Type the following command to update the volume boot code and press Enter:

    bootsect /nt60 X:
  9. Type the following command to copy all the Windows 10 files to the USB flash drive and press Enter:

    xcopy G:\*.* X:\ /E /F /H

    In the command, change the G and X drive letters with the correct drive letters for the Windows 10 ISO image and the USB flash drive respectively.

    Boosect command on Windows 10
    Boosect command on Windows 10

Once you’ve completed the steps, you can use the bootable flash drive to install Windows 10 on computers using BIOS or UEFI.

If you’re having issues creating a USB bootable media, you can submit your questions in the Pureinfotech forums.