zig_parted — Disk Partitioning in Zig

May 16, 2026

I recently published zig_parted, a pure-Zig library for reading and writing MBR and GPT partition tables. It supports creating, resizing, and managing partitions directly through disk I/O — no external commands or dependencies required.

Why?

Most partitioning tools (fdisk, parted, gdisk) are C programs called via CLI. That works, but when you're building system-level tooling in Zig — like an installer or disk utility — you either shell out or link against C libraries. This library eliminates that gap.

What it does

• Read and write MBR (Master Boot Record) partition tables
• Read and write GPT (GUID Partition Table) partition tables
• Create new partitions with a variety of filesystem types
• Resize existing partitions
• Direct disk I/O via zp.Disk

Usage

Add it to your build.zig.zon and import:

A minimal example: create a 50 MB disk image, write an MBR with two partitions (Ext4 and Fat32), then inspect the result.

Partition types

The library includes partition type constants for:

Caveats

Direct disk operations can modify partition tables. As the README says — always backup important data before use. This library is meant for controlled environments (installers, disk utilities) where you know what device you're targeting.

Links

• Codeberg repository