# Libreboot 26.11 replaces GRUB with EDK2 for full UEFI support

> **Key takeaway:** Libreboot 26.11 completes its transition to EDK2-based UEFI firmware, dropping GRUB as a core payload and requiring legacy BIOS users to migrate to UEFI before installation.

**Published:** 2026-11-12T19:05:28+00:00 
**Source:** Linuxiac 
**Category:** distro-news 
**Canonical URL:** https://fosswire.org/news/libreboot-2611-replaces-grub-with-edk2-for-full-uefi-support.html 

## Summary
Libreboot 26.11, the free firmware replacement for proprietary BIOS and UEFI, has shifted nearly all supported boards to the MrChromebox EDK2 payload, achieving full UEFI compatibility including Microsoft Windows boot support. This release removes GRUB, MemTest86plus, and CSMWrap as standard payloads, consolidating the firmware architecture and reducing maintenance overhead. Existing users running legacy BIOS configurations must migrate to UEFI with a proper EFI System Partition before flashing the new firmware, or risk unbootable systems.

Hardware improvements include TPM 2.0 enabled by default on ThinkPad X270/X280/T480/T480s/T580, Supermicro X11SSH-F, and Topton X2E N150, resolving previous SeaBIOS-related issues. Dell Latitude laptops gain corrected fan control, battery reporting, and lid-switch suspend behavior through updated ACPI implementations, while SD card readers return on ThinkPad W541 and Dell Latitude E7240. The release also incorporates a security patch for an ICMP bounds-checking vulnerability in EDK2's PXE stack and streamlines the lbmk build system with clearer ROM naming conventions.

## EDK2 transition and payload architecture changes
- **UEFI payload migration:** Nearly all supported boards now ship exclusively with the MrChromebox EDK2 payload, replacing GRUB as the core boot mechanism and enabling native Windows compatibility.
- **Legacy boot deprecation:** GRUB, MemTest86plus, and CSMWrap are removed from default builds; legacy boot requires manual compilation with components inserted through the efi/ directory, including GRUB EFI, MemTest86plus, and ReBIOS.
- **TPM 2.0 enablement:** TPM 2.0 is activated by default on multiple ThinkPad, Supermicro, and Topton platforms where it was previously disabled due to SeaBIOS compatibility problems now resolved under EDK2.
- **ACPI modernization:** Dell Latitude systems receive updated ACPI implementations replacing SMM-based patches, fixing fan control, battery status reporting, and lid-switch handling during suspend.
- **Build system simplification:** The lbmk utility gains clearer ROM naming with BIOS/UEFI prefixes, streamlined payload configuration, and easier insertion of additional EFI payloads and older firmware image handling.

## Why it matters
This release marks a significant architectural consolidation for open-source firmware, aligning Libreboot with modern UEFI-centric hardware initialization while reducing the maintenance burden of dual BIOS/UEFI codepaths. For Linux distribution maintainers and system administrators, the mandatory UEFI migration requirement demands proactive communication with users still on legacy BIOS installations, particularly on older ThinkPad and Dell corporate fleet hardware where Libreboot is commonly deployed.