HDPart

A modern AmigaOS RDB hard-disk partition tool for Kickstart 2.04+ (V37+) — a usable HDToolBox replacement aimed at CF/SD-on-IDE retro setups. GadTools GUI, single window, runs on a real Workbench or boots standalone from its own floppy.

• Discover a device → read its Rigid Disk Block → init / partition / resize / split → save.
• Format a partition into a ready, empty volume live — no reboot — using the ROM filesystem (FFS/OFS, Intl, DirCache). Won't touch the disk you booted from.
• Two-panel GUI (Disk / Partitions) with a disk-map bar, a screen-top Amiga menu bar, and keyboard shortcuts.
• Freestanding 68000 build — runs on a stock A500+/A600/A1200/A4000.

Credits & attribution

HDPart's RDB handling is based on rdbtool (part of amitools) by Christian Vogelgsang, © 2020–2023. The engine's on-disk RDB layout follows rdbtool, and the host test suite cross-checks HDPart's output byte-for-byte against rdbtool (tests/verify-rdbtool.sh). With thanks.

• Docs: https://amitools.readthedocs.io/en/latest/tools/rdbtool.html
• Source: https://github.com/cnvogelg/amitools

Built entirely with Bartman's vscode-amiga-debug C/C++ toolchain & extension (m68k-amiga-elf GCC, elf2hunk, and the Amiga SDK) — thank you.

• Source: https://github.com/BartmanAbyss/vscode-amiga-debug

Building

Uses the Bartman amiga-debug GCC cross-toolchain (m68k-amiga-elf, gcc 15.x), which is not on the default PATH:

export AMIGA_BIN="$HOME/.vscode/extensions/bartmanabyss.amiga-debug-1.8.2/bin/darwin"  # or .../linux
export PATH="$AMIGA_BIN/opt/bin:$AMIGA_BIN:$PATH"

make            # -> out/HDPart.exe (AmigaDOS hunk) + out/HDPart.elf (symbols)
make adf        # -> out/HDPart-<ver>.adf  (bootable 880K OFS floppy; needs amitools' xdftool)

Host-side RDB engine tests (system cc, no toolchain needed):

./tests/run-host-tests.sh       # unit tests for the RDB engine
./tests/verify-rdbtool.sh       # byte-for-byte cross-check vs amitools rdbtool

Releases

Pushing a release-x.x git tag triggers a GitHub Actions build that publishes a release with the versioned ADF and executable. The tag version must match the ADFVER in the Makefile (and the window title in src/gui.c).

License

HDPart's own source is released under the MIT License — see LICENSE.

amitools / rdbtool are © Christian Vogelgsang and the Bartman toolchain is © its authors, each under their own license; HDPart bundles no amitools, Bartman, Commodore, or Amiga files (the toolchain, Kickstart ROM, and Workbench fonts are all external to this repo).