Creating a Windows 10 installation USB from a Linux system is entirely possible and surprisingly straightforward once you know the few steps process and using few Linux tools. Whether you're preparing a dual-boot setup, fixing a broken Windows machine OS onplace, or re-installed Windows, installing fresh from scratch, is an useful skill every self-respecting sysadmin should be aware of.
Why Create Windows Installation Media from Linux ?
Even a hardcore Linux sysadmin / Desktop users need Windows for specific software, gaming, or troubleshooting, or for deployment of Windows installs for non-IT professionals, friends or company environments.
Having a Windows installable ISO by downloading and using Windows Media Creation Tool is an easy trivial task for those with Windows but is a problem especially for GNU / Linux users like me who don't own a computer with Microsoft Windows, but have Debian / Ubuntu / Fedora in place.
Microsoft’s official media creation tool is made to only runs on Windows OS, fortunately there is a few ways to have an installable USB drive prepared even on Linux.
The main challenge lies in properly formatting the USB flash drive and handling large Windows image files, especially the install.wim, which can exceed FAT32 file size limits.
What You’ll Need
Before starting, make sure you have:
- A USB drive (at least 8GB sized recommended)
- A Linux system (Ubuntu, Fedora, Arch Linux etc.)
- The latest Windows 10 ISO file (downloaded locally)
1. Download the Windows 10 ISO
Go to Microsoft’s official website and download the latest Windows 10 ISO. You can do this directly from Linux using your browser.
- Go to the Official Windows 10 Download Page.
- On Windows: Press F12 (Dev Tools), click the Device Toolbar icon (mobile/tablet icon), and refresh the page. This tricks Microsoft into thinking you are on a Mac or Linux machine.
- Select the edition and language, then click Confirm.
- Right-click the 64-bit Download button and select Copy link address.
- In your terminal, use wget. Note: You must wrap the URL in double quotes because it contains special characters:
Use wget with a direct copy of download link like for example:
$ wget https://www.microsoft.com/software-download/windows10.iso -O windows10.iso
Make sure the ISO is fully and correctly downloaded before proceeding further.
2. Install Required Tools
On Debian / Ubuntu deb-based distros. You’ll need few utilities:
# apt update # apt install wimtools ntfs-3g p7zip-full
On Fedora:
# dnf install wimlib ntfs-3g p7zip
These tools help extract and handle Windows image files properly.
3. Prepare the USB Drive
Insert your USB drive and identify it:
# lsblk
Look for something like /dev/sdb (be careful, as this will erase all data on the drive).
Partition and Format
Use fdiskor parted:
# fdisk /dev/sdb
- Create a new partition table (GPT or MBR)
- Create one primary partition
- Set type to NTFS or FAT32
Then format it:
# mkfs.ntfs -f /dev/sdb1
NTFS is recommended because it supports large files.
4. Mount ISO and USB
Create mount points:
mkdir ~/winiso mkdir ~/winusb
Mount the ISO:
# mount -o loop windows10.iso ~/winiso
Mount the USB:
# mount /dev/sdb1 ~/winusb
5. Copy Files of ISO to Flash drive
Copy all files from the ISO to the USB:
# rsync -avh –progress ~/winiso/ ~/winusb/
This may take several minutes.
6. Handle Large install.wim File (If Needed)
If you formatted your USB as FAT32 and encounter issues with large files:
Split the WIM file:
# wimlib-imagex split ~/winiso/sources/install.wim ~/winusb/sources/install.swm 4000
Then remove the original:
rm ~/winusb/sources/install.wim
This step ensures compatibility with FAT32 file size limits.
7. Safely Unmount
Once everything is copied, make sure to:
# umount ~/winiso # umount ~/winusb
Now your USB is ready.
! NB ! Ensure Boot Files Exist
Double-check this path exists (on the new created Flash stick):
/EFI/BOOT/bootx64.efi
If this file is missing, the USB will fail to boot Windows 11 OS Installer.
8. Boot from fresh created USB drive
Insert the USB flash drive into the target machine, reboot, and enter BIOS / UEFI (usually by pressing F2, F12, DEL, or ESC).
Select the USB drive as the boot device / Save settings, reboot and the Windows OS installer screen should appear.
9. Troubleshooting Tips and Common Pitfalls (Especially with Windows 11)
- USB not booting ? – Ensure your system is set to boot in UEFI mode if your USB is GPT formatted.
- Missing drivers ? – Try recreating the USB using NTFS instead of FAT32.
- Secure Boot issues ? – You may need to disable Secure Boot in BIOS.
9.1. USB Not Booting
- Try use FAT32 instead of NTFS
Ensure UEFI mode is enabled
9.2. “File Too Large” Error
- Very likely you forgot to split install.wim (as prior described)
9.3. Installer Refuses to Continue
- Windows 11 require:
a.TPM 2.0
b. Secure Boot
10. Alternative GUI Linux Tools to use WoeUSB-ng / Ventroy
If you prefer Linux GUI tools for preparation of Installation USB drive Media , consider downloading WoeUSB or Ventroy:
- WoeUSB – specifically designed for creating Windows bootable USBs from Linux
- Ventoy – allows you to copy multiple ISOs to a single USB and boot from a menu
10.1 Install WoeUSB-ng
Easiest and perhaps most straight forward way is to install it via git and pip python.
$ git clone https://github.com/WoeUSB/WoeUSB-ng.git
$ cd WoeUSB-ng
$ sudo pip3 install .
10.2. Install Ventroy and deploy Windows installer on USB Drive
a) Prepare the USB Drive in Linux
b) Add the Windows ISO
c) Install Windows ISO
1. Download it : Get the ventoy-x.x.xx-linux.tar.gz file from the Ventoy website.
2. Extract : Open a terminal and extract: tar -xvf ventoy-*.tar.gz.
3. Locate USB: Run lsblk to identify your USB drive (e.g., /dev/sdb).
4. Install: Run the script (replace /dev/sdb with your drive):
# sudo ./Ventoy2Disk.sh -i /dev/sdb
Once installed, the USB will have a large partition named "Ventoy".
5. Copy, paste Windows ISO file: (Windows 10 or 11) onto this USB drive.
6. Insert the USB, into the target computer.
7. Reboot PC: and enter the BIOS/boot menu (e.g., F2, F12) to boot from the USB.
Sum it up
Creating Windows 10 installation media from Linux might seem tricky at first, but with the right approach, it’s completely manageable, it is also a nice one if you need to create multiple flash drives, and you need to automate the process of Windows installable USB drive creation for multiple windows setups that needs to get reinstalled on place simultaneously.
Once you’ve done it once, it becomes a quick and reliable process you can reuse anytime.
Whether you're a Linux enthusiast or just working across systems, this method ensures you're never stuck without a Windows installer at hand, even without owing a Windows OS.
