Change BootLoader — C++ port

Native Win32 port of Change_bootloader\Change_bootloader.au3 with the same window, buttons, actions and messages.

Build

Requirements: Visual Studio 2022 (Desktop C++) and CMake 3.20+.

build.cmd

Output:

build\Release\Change_BootLoader.exe

The executable is 32-bit, uses a static CRT (no VC++ redistributable), and requests administrator rights through the embedded manifest.

How it works

The program must be started from the root of a PARAVIS flash drive, for example F:\Change_BootLoader.exe.
It derives the drive from its own path and checks for \efi\Paravis\Boot\bootice.exe and \efi\Paravis\Boot\NOT.DEL.
If those files are missing, it shows the original error and exits.
Seven buttons perform the same operations as the AutoIt version:
- Legacy BIOS: XorBoot, Bootmgr, Grub4Dos, Grub2
- UEFI: Bootmgr, Grub2, Xorboot
Bootice, xcopy and the GRUB2 MBR helper script are invoked exactly like the AutoIt version. The helper script is \efi\Paravis\Boot\grub2\bios\make-paravis-mbr.ps1.

Notes

The UI matches the AutoIt version (376 × 208, same fonts, positions, hover/pressed colors).
Message boxes are native MessageBoxW dialogs with the same titles and texts.
The debug log is disabled by default. Set PARAVIS_DEBUG_LOG=1 to write %TEMP%\cbl_cpp_debug.log.
The GRUB2 Legacy action uses the same bootice /sectors commands as the AutoIt version. On some virtual disks bootice displays its own sector confirmation/error dialogs; on a real PARAVIS USB flash it behaves the same as the original.

Repository layout

src/            C++ sources and resources
legacy-au3/     original AutoIt script
build.cmd       release build

License

MIT. See LICENSE.

This repository contains source code only. Third-party binaries used at runtime (bootice.exe, xcopy, powershell.exe) are not distributed here and must be supplied by the system or by the PARAVIS flash image.

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