macUSB – Simplified creation of legacy macOS bootable USB drives

Summary: macUSB enables creating bootable USB installers for legacy macOS and OS X versions on modern Macs without Terminal use. It supports .dmg, .iso, .cdr, and raw .app installers, including PowerPC-era systems.

What it does

macUSB creates bootable USB installers from various image formats and provides PowerPC USB boot instructions for vintage Macs. It streamlines preparing install media on Apple Silicon machines.

Who it's for

Users needing to revive or install legacy macOS versions on older Intel or PowerPC Macs using modern Apple Silicon hardware.

Why it matters

It resolves Terminal errors, certificate issues, and incompatibilities when creating legacy macOS install media on current Macs.