How Big is Windows 11 on USB? A Comprehensive Guide

When you’re installing Windows 11 on a USB drive, the size of the installation can be crucial. Will it fit on your existing USB drive, or do you need a bigger one? Don’t worry, I’ve got you covered. After reading this article, you’ll know exactly how big Windows 11 is on USB and how to get it set up without a hitch.

Step by Step Tutorial: Installing Windows 11 on USB

Before diving into the steps, it’s important to know that installing Windows 11 on a USB drive allows you to create a portable version of the operating system. This can be especially handy for troubleshooting or running Windows on different computers without affecting their native systems.

Step 1: Check the size requirements

Windows 11 requires a USB drive with at least 8GB of storage.
Although the minimum requirement is 8GB, it’s recommended to use a USB drive with 16GB or more to ensure enough space for additional files and updates.

Step 2: Download the Windows 11 media creation tool

Visit the official Microsoft website and download the Windows 11 media creation tool.
The media creation tool will help you create a bootable USB drive, which is essential for installing Windows 11 on different computers.

Step 3: Run the media creation tool

Open the tool and follow the on-screen instructions to create the installation media.
The tool will guide you through the process of selecting the correct version of Windows 11 and the language you prefer.

Step 4: Choose the USB flash drive option

When prompted, select the ‘USB flash drive’ option as your media to use.
You need to ensure the USB drive is connected to your computer before selecting this option.

Step 5: Wait for the installation media to be created

The tool will download Windows 11 and create the installation media on your USB drive.
It can take some time for the download and creation processes to complete, so be patient.

After completing these steps, you’ll have a bootable USB drive with Windows 11 installed. You can use this to install Windows on any compatible computer. Just plug it in, boot from the USB, and follow the installation prompts.

Tips for Installing Windows 11 on USB

  • Use a high-quality USB drive to avoid errors during the installation process.
  • Ensure your computer’s BIOS is set to boot from USB; otherwise, the installation won’t start.
  • Keep your USB drive formatted in the correct format (usually NTFS for Windows installations).
  • If you encounter any errors during the installation, try creating the media again or using a different USB port.
  • Remember to back up any important data on your USB drive as the process will erase all existing content.

Frequently Asked Questions

How big is Windows 11 on USB?

Windows 11 requires at least 8GB of space on a USB drive, but it’s better to use a larger one to accommodate updates and additional files.

Can I use my Windows 11 USB drive on multiple computers?

Yes, you can use the bootable USB drive to install Windows 11 on any compatible computer.

Will installing Windows 11 on USB erase my other files on the drive?

Yes, creating the installation media will erase all existing content on your USB drive.

Do I need an internet connection to install Windows 11 from USB?

An internet connection is required to download the media creation tool and Windows 11 installation files, but not for the actual installation process.

Can I use a USB 2.0 drive to install Windows 11?

Yes, but a USB 3.0 or higher is recommended for faster data transfer speeds and better performance.


  1. Check that your USB drive has at least 8GB of storage.
  2. Download the Windows 11 media creation tool from Microsoft.
  3. Run the media creation tool and follow the prompts.
  4. Select the ‘USB flash drive’ option when prompted.
  5. Wait for the tool to create the installation media.


Installing Windows 11 on a USB drive is a straightforward process, as long as you follow the steps and have the right equipment. Remember that while 8GB is the minimum requirement, it’s wise to opt for a larger drive to give yourself some breathing room. With your new bootable Windows 11 USB drive, you’ll enjoy a versatile and portable operating system that you can take with you wherever you go. Whether you’re troubleshooting, testing, or just need a backup plan, Windows 11 on USB is a smart solution. Give it a try, and you’ll see just how convenient and efficient it can be.

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