Dlc Boot Uefi Iso May 2026

Create ~/dlc_build/boot/grub/grub.cfg. This is the secret sauce.

# Load necessary modules for filesystem variety
insmod part_gpt
insmod part_msdos
insmod fat
insmod ntfs
insmod exfat
insmod iso9660
insmod search_fs_uuid
insmod loopback
set default=0
set timeout=30
Before deployment, validate:
| Limitation | Impact |
|------------|--------|
| Secure Boot | DLC must be signed or Secure Boot disabled |
| ISO size limit | UEFI FAT32 ESP limits single file to 4GB; ISO can exceed if DLC external |
| Boot speed | Mounting remote DLC adds delay |
| Portability | External DLC (USB/network) reduces plug-and-play nature |

Create C:\DLC_ISO_Project\media\DLC_LAUNCHER.PS1 that runs on boot: dlc boot uefi iso
# 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:
wpeinit
powershell -ExecutionPolicy Bypass -File X:\DLC_LAUNCHER.PS1

Commit changes again.
Cause: WinPE’s driver load order.

Fix: Use drvload.exe X:\DLC_Drivers\mega-sas2.inf explicitly. Also verify driver architecture (must be amd64).