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Useful UEFI tools, based upon edk2

zedk 최신버젼 다운로드

최종 버전 다운로드 (.zip)

// repository documentation

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# zedk: Useful UEFI tools

## What

zedk provides UEFI binaries from TianoCore EDK II, an open-source UEFI reference implementation, and then some.

Currently, zedk has the following applications:

- Provide a recent UEFI shell binary
- Boot to a textual UEFI-Setup interface ("the BIOS") from the UEFI shell
- Unlock hidden settings in your UEFI Setup/BIOS without flashing a custom ROM
- Enable a remote UEFI-level console over the serial port without further configuration (which can be used to remotely enter the Setup, diagnose boot problems with iPXE, etc.)

<b>NOTE</b> The additional, otherwise hidden settings may be harmful to your computer, causing instabilities or crashes. Use entirely at your own risk.

![Demo](https://raw.githubusercontent.com/kohlschuetter/zedk/main/doc/zedk-boot.gif)

## Why

In many UEFI/BIOS forums, certain UEFI binaries are referenced and/or shared, without a clear way how to obtain them from source. In contrast, _zedk_ provides a straightforward path from source code to a binary distribution. As a consequence, updating the binaries using newer versions of _EDK II_ becomes trivial, while trust is increased.

With respect to providing access to the Setup interface, _zedk_ is inspired by "UniversalAMDFormBrowser", which was only released in binary form and sadly later abandoned by its author, _SmokelessCPU_. Thankfully, they described the inner workings on the [Win-Raid Forum](https://winraid.level1techs.com/t/tool-universalamdformbrowser/40353/16). While indeed rather trivial in theory, in practice, taming EDK II's build system was much harder than uninstalling four UEFI protocols.

## How

### Running the binaries

Once copied to a USB stick, you can boot your computer directly to a UEFI shell, and access the provided binaries.

Binaries are provided on the [releases page](https://github.com/kohlschuetter/zedk/releases).

Unzip the `zedk.zip` to a FAT32-formatted USB-stick. Reboot your computer; use the Boot-Menu (F12) to select your USB drive. Alternatively, change the boot order via Setup to prioritize the USB flash drive over all other drives. Make sure _Secure Boot_ is disabled.

Once the UEFI Shell boots, follow the [instructions](src/suite/readme-zedk.txt) on screen.

### Building from source

The build system of _EDK II_ (edk2) is hard to figure out and easy to get wrong. _zedk_ changes that.

The build logic is centered around simple shell scripts running on Alpine Linux. By default, an Alpine Linux 3.23 container (via either [Apple Container](https://github.com/apple/container), [Podman](https://podman.io), or [Docker](https://www.docker.com)) is launched to encapsulate the build process.

Cross-compilation is supported (tested on macOS with Apple Silicon). Currently, the only target platform is `x86_64`.

Due to some bugs in newer versions of EDK II, to get to a working solution, _zedk_ allows building and combining multiple versions from source control.

Additionally, `setup_var.efi` is built from source as well. It is used to control an NVRAM variable (`AmiSetupFormSetVar`), which causes the Setup environment to temporarily reveal the hidden Setup entries. This change may persist on some platforms (Lenovo 7000k?) but is temporary on others (Lenovo Tiny) — which is exactly why we have to launch Setup via UEFI shell/zedk.

To build _zedk_ from scratch, run `./build.sh` from this repository. The zip artifact is then placed under `target/zedk.zip`.

If you're on Alpine Linux, you may also try building directly (launch `./scripts/build-alpine.sh`); if you're developing _zedk_, try adding `-C` as a parameter to skip cleaning.

## Where

- zedk should run on most x86_64 (Intel/AMD 64-bit) UEFI systems.
- Hidden BIOS features are automatically unlocked for certain AMI UEFI setups (wherever _AmiSetupFormSetVar_). Tested systems so far:
  - Lenovo ThinkStation P330 Tiny
  - Lenovo ThinkCentre M920q/M920x Tiny
  - Lenovo ThinkCentre M625q

## Who and When

zedk was created by [Christian Kohlschütter](https://kohlschuetter.github.io/blog/) on February 18-19, 2026.

### Changes in zedk-20260224

- Move UnloadUUID code to this repository
- Improve build scripts and README
- Add instructions how to boot directly into Setup

## Dependencies

zedk depends/builds upon

- [TianoCore EDK II](https://github.com/tianocore/edk2), BSD-2-Clause-Patent License
- [datasone setup_var.efi](https://github.com/datasone/setup_var.efi), Apache 2.0/MIT License

## Related projects

- [pbatard's UEFI-Shell](https://github.com/pbatard/UEFI-Shell?tab=readme-ov-file) Pre-built UEFI Shell binary images
- [Smokeless_UMAF](https://github.com/DavidS95/Smokeless_UMAF) UniversalAMDFormBrowser (binary only)
- [Lenovo 7000k Unlock BIOS](https://github.com/CalvinXu17/Lenovo-7000k-Unlock-BIOS) Tool to adjust _AmiSetupFormSetVar_ from Windows. Not effective on Lenovo Tiny.

## License

zedk is licensed under the Apache 2.0 License, available [here](LICENSE) or [online](https://www.apache.org/licenses/LICENSE-2.0).

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