From your ADK directory, run:

bcdedit /createstore C:\DLC_ISO_Project\media\efi\microsoft\boot\BCD bcdedit /store C:\DLC_ISO_Project\media\efi\microsoft\boot\BCD /create {ramdiskoptions} /d "Ramdisk options" bcdedit /store C:\DLC_ISO_Project\media\efi\microsoft\boot\BCD /set {ramdiskoptions} ramdisksdidevice boot bcdedit /store C:\DLC_ISO_Project\media\efi\microsoft\boot\BCD /set {ramdiskoptions} ramdisksdipath \boot\boot.sdi (Simpler approach: Use copype ’s default efisys.bin – described in Step 5.) Create C:\DLC_ISO_Project\media\DLC_LAUNCHER.PS1 that runs on boot:

copype amd64 C:\DLC_ISO_Project This creates C:\DLC_ISO_Project\media – your ISO root. Extract the Dell Driver CAB into a subfolder inside WinPE:

dism /Mount-Image /ImageFile:"C:\DLC_ISO_Project\media\sources\boot.wim" /index:1 /MountDir:"C:\DLC_ISO_Project\mount" dism /Add-Driver /Image:"C:\DLC_ISO_Project\mount" /Driver:"C:\DLC_ISO_Project\media\DLC_Drivers" /Recurse /ForceUnsigned dism /Commit-Image /Unmount-Image /MountDir:"C:\DLC_ISO_Project\mount" Dell drivers are signed; however, if you add custom scripts, you must re-sign boot.wim using a certificate trusted by the UEFI firmware. Step 3: Configure UEFI Boot Entry UEFI requires an EFI bootloader. Copy the 64-bit UEFI bootloader:

# DLC Deployment Script Write-Host "Injecting Dell Lifecycle Controller drivers..." -ForegroundColor Green drvload.exe X:\DLC_Drivers\*.inf Start-Process "X:\Windows\System32\Dell\PlatformSpecificUtility.exe" -ArgumentList "/update /silent" Modify startnet.cmd (in the mounted WIM’s Windows\System32 ) to call this script:

mkdir C:\DLC_ISO_Project\media\DLC_Drivers expand -F:* C:\Downloads\Dell-PowerEdge-R740-24.03.00.CAB C:\DLC_ISO_Project\media\DLC_Drivers Now mount the WinPE boot image to inject drivers: