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How to Run Windows From a USB Drive?

Last Updated : 23 Jul, 2025
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Looking to run Windows from a USB drive? Whether you're using it for troubleshooting, testing, or as a portable version of your operating system, booting Windows from a USB drive can be extremely useful. With the right tools and setup, you can create a bootable Windows USB drive that lets you carry a portable version of Windows anywhere. In this guide, we’ll show you how to run Windows from a USB, including creating the drive and getting your system to boot from it.

How to Run Windows From a USB Drive?

Users can run their Windows operating system by following the below-mentioned methods -

Method 1: Download the Bootable image

  • Go to the official page of Microsoft Windows to download the boot image for Windows 10.
  • Using a Computer browser you will not get the download option for boot image so use a Mobile device for downloading.
  • Select edition and language and click on Confirm.

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Method 2: Configure USB Drive

  • Download the latest version of Rufus from the official website which will be used to flash the boot image into a USB drive.

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  • Insert a USB Drive of minimum 16GB of storage into the computer and run Rufus. Select the iso file for Windows 10 in Boot Selection.

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  • For Image Option choose Windows To Go.
  • Use Partition scheme as GPT.
  • Leave other fields as it is and click on Start.
  • On the next screen choose the suitable Windows edition and click on OK.

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  • Now configure the Windows User Experience as per your requirements.
  • Once done press OK.

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Wait a few minutes for Rufus to flash the boot image, once completed you can close the application.

Method 3: Change Boot Priority

  • Restart the computer and open BIOS Settings.
  • To know the BIOS key, check the manufacturer's website.
  • On the BIOS menu, go to the boot section and select USB device as the highest priority.
  • Disable secure boot if you face any issues during startup.

Boot-Priority

Method 4: Setup Process

As the installation process is already completed while flashing the boot image. We will start the setup process when the computer restarts.

  • Choose the region based on your location and click on Yes.

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  • Choose the correct keyboard layout or add a new keyboard layout and then click on Yes.

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  • Carefully read the Windows 10 License Agreement and click on Accept.

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  • Now, Create a User for the PC. Write your username and click on Next.
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  • Enter a strong password that you can remember easily and click on Next.
  • Set up security questions and answers on the next screen to reset your suit password in case you forgot.

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  • On the privacy settings page, choose the options that suit you. Turn off or Turn on the features as per your requirements and click on Accept.
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Now wait for a few minutes and Windows will complete the rest of the setup for you. During this, the PC can be restarted automatically for several times.

Method 5: Explore Windows

Once the setup is completed you will be taken to the home screen of Windows 10.

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  • This looks the same as the Windows running on stand-alone PCs.
  • To check the folders you can go to File Explorer and check the C drive.

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  • As you can see this contains the same file structure as any other Windows machine. As the whole OS is running from the USB Drive you will see only a single Drive here with the storage capacity the same as the USB Disk.

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Conclusion

Using a bootable Windows USB drive is a great way to have a portable, fully functional Windows environment wherever you go. By following the steps in this guide, you can easily run Windows from a USB drive, making it perfect for testing or emergencies. Whether you're looking to install Windows on an external USB drive or simply need a portable version of your OS, this setup gives you flexibility and convenience.

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