mydiskdmg

mydiskdmg is a software utility designed for working with disk image files in the DMG format. It provides a lightweight, script-friendly alternative to graphical disk utilities, focusing on automation, reproducibility, and batch processing on macOS.

The tool can create new disk images, attach (mount) existing images, inspect metadata, convert between DMG variants, and verify integrity through checksums. It supports common DMG formats such as compressed, read-only, and read-write images, as well as sparsebundle variants. It emphasizes a stable command-line interface and aims to be extensible via plugins.

Usage is typically through a command-line workflow: generate an image with a specified size and filesystem, attach it to obtain a mount point, perform file operations, and detach when finished. Automation scripts can orchestrate multiple images, enabling reproducible build and test environments and simplifying repetitive maintenance tasks.

Development and licensing: mydiskdmg is distributed as an open-source project under a permissive license. The project maintains a public repository with issue tracking and contribution guidelines. The software emphasizes security, with options for image integrity verification and signed builds, and it seeks to remain interoperable with established disk image tooling.

Related topics include DMG, Disk Utility, hdiutil, and disk image management.