Download Windows Media Creation Tool
Open Powershell and use it to launch the tool with these options. You can either use a relative or absolute path for the exe file. An easy way to get the path of a file is to hold in shift and right click, then select "Copy as path" in File Explorer.
# Make sure to change the language code to your liking, I have selected en-US. If you are on 32-bit you can use x84.
C:\Users\Felix\Downloads\MediaCreationTool21H1.exe /Eula Accept /Retail /MediaLangCode en-US /MediaArch x64 /MediaEdition Enterprise
Select the ISO option if you want to continue and customize/preinstall drivers, if you simply want a bootable USB with stock Enterprise you can select it here and you are done!
When asked for a key, you can use an official KMS key from Microsoft. The current one as of writing for Windows 10 Enterprise is NPPR9-FWDCX-D2C8J-H872K-2YT43
.
install.esd
is a compressed install image which contains various versions of the operating system. To customize our image we need to export it to .wim
. It will contain the specific image(s) that we are looking to utilize.
Mount the ISO by clicking on it. This should mount the image to a drive letter which you can access. To get information about which Windows versions your ISO contains, use
# Use your own path here, simply change out the drive letter to the one your mount was assigned to. Check File Explorer -> "This PC".
dism.exe /Get-WimInfo /WimFile:D:\sources\install.esd
The command should return an indexed list like this.
Details for image : D:\sources\install.esd
Index : 1
Name : Windows 10 Education
Description : Windows 10 Education
Size : 15,736,130,486 bytes
Index : 2
Name : Windows 10 Education N
Description : Windows 10 Education N
Size : 14,956,748,370 bytes
Index : 3
Name : Windows 10 Enterprise
Description : Windows 10 Enterprise
Size : 15,736,284,481 bytes
Index : 4
Name : Windows 10 Enterprise N
Description : Windows 10 Enterprise N
Size : 14,956,654,647 bytes
Index : 5
Name : Windows 10 Pro
Description : Windows 10 Pro
Size : 15,734,489,825 bytes
Index : 6
Name : Windows 10 Pro N
Description : Windows 10 Pro N
Size : 14,959,031,814 bytes
Note down the index of the version you want to use. I want to use Enterprise so my index is 3.
Next we convert install.esd to install.win so we can modify it.
Background
.esd
is a highly compressed format that usually contains a collection of various images as shown above. This format is ideal when installing due to its small size but makes it hard to manipulate using current tooling, so we will convert the image we want to use to .wim.
# Make sure to switch out SourceIndex to the index you want to use. Same goes for paths
dism.exe /Export-Image /SourceImageFile:D:\sources\install.esd /SourceIndex:3 /DestinationImageFile:"C:\BigWork\install.wim" /Compress:max /CheckIntegrity
We should now have an install.wim
file exported at our specified path, now we can add our packages or drivers to this image before making it bootable.
You can verify that the exported install.wim
contains the the correct image version.
Dism /Get-ImageInfo /ImageFile:C:\BigWork\install.wim
Output example
Details for image : C:\install.wim
Index : 1
Name : Windows 10 Enterprise
Description : Windows 10 Enterprise
Size : 15,736,284,481 bytes
We can now mount this image to a folder. Create a folder and mount install.wim
to it.
# Use the exact name from previous check or use /Index:1
Dism /Mount-Image /ImageFile:C:\BigWork\install.wim /Name:"Windows 10 Enterprise" /MountDir:C:\BigWork\Mount
OR
Dism /Mount-Image /ImageFile:C:\BigWork\install.wim /Index:1 /MountDir:C:\BigWork\Mount
My Dell XPS comes with a CAB driver pack, so I will use that. CAB is a compressed archive used for drivers and firmware.
Dism /Image:C:\BigWork\Mount /Add-Package /PackagePath:"C:\BigWork\Packages\9700-WIN10-A04-H0D74.CAB"
If you face issues with CAB
For some reason adding my package returns error 0x80070002 for me, stating that it cannot find the file specified despite being correct path. To resolve, you can simply extract the archive and use the extracted folder in the "Adding Drivers" section below.Extracting CAB folders
# -F option is files, the option below will extract the folder and all files recursively.
Expand "C:\BigWork\Packages\9700-WIN10-A04-H0D74.CAB" -F:* "C:\BigWork\Drivers"
# /Recurse allows driver path to be a folder full of files, like a decompressed CAB file. If you would like to add a singular driver you can, just remove recurse and specify the extension used (usually .inf). You can use /ForceUnsigned option if you want to install an unsigned driver, but it's not recommended, you can sign your own drivers too but that's outside the scope of this guide.
Dism /Image:C:\BigWork\Mount /Add-Driver /Driver:c:\BigWork\Drivers\9700 /Recurse
When adding multiple drivers, you should get verbose feedback on the install process, such as
Installing 139 of 139
Your drivers should now be installed and ready! 🎉
To verify installed 3rd party drivers.
Dism /Image:C:\BigWork\Mount /Get-Drivers
This will return a list of all of them, do note that the names will be generic and fail to match the original.
Unmount and commit your changes. Give it time to save your changes and dismount the image.
# You can use /Discard instead of /Commit if you made an error.
Dism /Unmount-Image /MountDir:C:\BigWork\Mount /Commit
It's now ready, now all that is left is to create a bootable USB with your new custom image! You need to have an USB drive formatted as FAT32 that is marked as active, for that follow Step 1 in this guide.
When that is done. Open/mount your original ISO and drag all files EXCEPT install.esd to the newly formatted USB. The reason that we do not want to transfer install.esd is because our newly generated file will replace it, and it's large so it takes time to
It is likely that your install.wim
file exceeds 4GB, which means that you will have to split it into multiple smaller files as FAT32 format does not support files over 4GB. This is easily fixed however. Microsoft docs offer an excellent solution here.
To split your .wim file to multiple smaller files, you can use this command
Dism /Split-Image /ImageFile:C:\BigWork\install.wim /SWMFile:E:\sources\install.swm /FileSize:3800
NOTE: This command is quite slow and lacks any visual indication of working, do be patient. (You can confirm that it works by checking USB disk usage in Task Manager)
When complete you should have two or more install.swm
files.
Now all you have to do is drag your newly split install.swm
files to your USB \sources\ folder. If you did not need to split the file you use install.wim
.
Your USB is now ready, all that is left is to boot it and install Windows like usual! Your drivers should automatically be detected within Windows update on your newly installed OS.