Uefi Iso - Dlc Boot

wpeinit powershell -ExecutionPolicy Bypass -File X:\DLC_LAUNCHER.PS1 Commit changes again. This is the most critical part for dlc boot uefi iso success. We need a hybrid image that supports both UEFI (via EFI boot sector) and legacy BIOS.

# 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: dlc boot uefi iso

mkdir C:\DLC_ISO_Project\media\efi\boot copy "C:\Program Files (x86)\Windows Kits\10\Assessment and Deployment Kit\Windows Preinstallation Environment\amd64\en-us\winpe.wim\EFI\BOOT\BOOTX64.EFI" C:\DLC_ISO_Project\media\efi\boot\ Create a startup.nsh (for UEFI Shell fallback) and a BCD boot configuration file: # DLC Deployment Script Write-Host "Injecting Dell Lifecycle

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: Extract the Dell Driver CAB into a subfolder inside WinPE:

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: