disk-arbitrator ☆

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Description:
No description available

Type: Cask | Latest Version: 0.8.0@0 | Tracked Since: Dec 17, 2025

Links: Homepage | formulae.brew.sh

Category: System utilities

Tags: disk-management macos system-utilities troubleshooting storage

Install: brew install --cask disk-arbitrator

About:
Disk Arbitrator is a utility for macOS that allows users to manipulate disk arbitration events, effectively controlling how the system mounts and handles volumes. It provides a graphical interface to intercept and modify disk events, which is invaluable for troubleshooting mounting issues or managing complex storage setups. The tool's main value is providing low-level control over the macOS disk management subsystem.

Key Features:

Graphical interface for monitoring and modifying disk arbitration events
Ability to intercept and override automatic volume mounting behavior
Support for creating custom mount scripts and rules
Detailed logging of disk events for troubleshooting

Use Cases:

Troubleshooting external drive mounting issues on macOS
Preventing automatic mounting of specific volumes (e.g., Time Machine backups)
Managing complex multi-volume storage configurations

Alternatives:

Disk Utility – Disk Utility is Apple's built-in tool for basic disk management, but lacks the advanced event interception capabilities of Disk Arbitrator
diskutil CLI – Command-line utility for disk operations, but doesn't provide the same level of real-time arbitration control and monitoring

Version History

Detected	Version	Rev	Change	Commit
Aug 5, 2025 2:17pm	0.8.0	0	VERSION_BUMP	7c9047c3
Jul 10, 2024 12:27pm	0.8.0	0	VERSION_BUMP	c741fddf