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MarlonSP's avatar
MarlonSP
Brass Contributor
May 29, 2026

How to upgrade to Windows 11 for free in 2026?

Running an older PC that's been on Windows 10 for years and starting to think about upgrading to Windows 11 before support runs out. The machine works perfectly fine for everyday tasks so replacing i...
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Davisqur's avatar
Davisqur
Copper Contributor
May 29, 2026

The technical reason this works is straightforward. The Windows 11 installer enforces hardware requirements through specific components inside the boot .wim file, which is the bootable Windows image that loads when you start your computer from installation media. When you modify this file directly - the installer will no longer block on those requirements.

Share the detailed steps on how to upgrade to Windows 11:

Step 1: Download the Windows 11 ISO

Step 2: Extract the ISO Contents

  • Mount the ISO by right-clicking it and selecting "Mount." This will appear as a DVD drive in File Explorer. Note the drive letter assigned.
  • Alternatively, you can extract the entire ISO contents using 7- Zip. Extracting gives you easier access to the files for modification.

Step 3: Locate and Extract the Boot Image

  • The bootloader is stored inside a file called boot .wim, located in the sources folder of your extracted ISO. This file contains the WinPE environment that runs when you boot from the USB drive.
  • Open Command Prompt as an administrator. Create a folder to mount the boot image:

cmd

mkdir C: \WinPE _Mount

Then, mount the boot. wim file using DISM:

cmd

DISM /Mount- Wim /WimFile:" C:\path\to\extracted\sources\boot, wim" /Index :1 /MountDir: C:\WinPE_ Mount

Step 4: Inject Registry Bypass Keys into the Bootloader

  • This is the critical step. You will load the registry hive from the mounted WinPE image and add the keys that tell Windows Setup to ignore hardware requirements.

Step 5: Unload the Registry and Commit Changes

Unload the registry hive and Then commit your changes to the boot .wim file:

cmd

DISM /Unmount- Wim /MountDir: C:\WinPE_ Mount /Commit

Step 6: Create Your Bootable USB Drive

  • With the modified boot. wim in place, you now need to create a bootable USB drive containing your patched installation files.

If you already have a bootable Windows 11 USB drive created by another method, you can simply replace the boot.wim file in its sources folder with your modified version. This preserves the bootable structure while updating the WinPE environment.

Now that you understand how to upgrade to Windows 11 using a patched bootloader, you can proceed with confidence. The DISM method is more technical but gives you complete control over the installation media.