mkdir -p ~/dlc_iso/{boot,grub,efi,dlc_drivers} cp /usr/lib/grub/x86_64-efi/monolithic/bootx64.efi ~/dlc_iso/efi/ cp ~/Downloads/Dell_CAB/*.inf ~/dlc_iso/dlc_drivers/ cat > ~/dlc_iso/grub/grub.cfg <<EOF set default=0 set timeout=5 menuentry "Boot DLC WinPE" { chainloader /efi/bootx64.efi } EOF Build ISO with xorriso xorriso -as mkisofs -R -f -J -joliet-long -iso-level 3 -eltorito-boot boot/grub/efi.img -no-emul-boot -boot-load-size 4 -boot-info-table -eltorito-alt-boot -e efi.img -no-emul-boot -o dlc_boot_uefi.iso ~/dlc_iso Part 7: Real-World Deployment – Flashing 50 PowerEdge Servers Once your dlc boot uefi iso is ready, burn it to a USB using Rufus (in DD image mode) or deploy via iDRAC Virtual Media.
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.
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: 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:
In the modern era of IT asset management and system recovery, three acronyms often collide in a single, high-stakes task: DLC , UEFI , and ISO . While "DLC" typically means "Downloadable Content" in gaming, within enterprise and systems engineering circles, it stands for Dell Lifecycle Controller (or more broadly, Driver Lifecycle Control). When you need to create a custom bootable image that supports UEFI and injects DLC payloads (like firmware, drivers, or OS deployment tools), you are entering complex territory. We need a hybrid image that supports both
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:
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: When you need to create a custom bootable
From your ADK directory, run: