DiskInfo

A native macOS app that displays detailed SMART information for all connected disks — internal NVMe, external USB, and SATA drives.

Built with SwiftUI and Swift 6, no Xcode required.

Features

• Real-time disk scan — detects all physical disks via diskutil
• SMART health data — temperature, wear, spare, usage, reliability
• All temperature sensors — shows every sensor the drive reports
• Progress bars — visual indicators for health % and spare
• SATA support — reallocated sectors, pending sectors, CRC errors
• Technical details — full smartctl raw output parsed (NVMe version, PCI vendor, power states, etc.)
• Auto-install — if smartctl or even Homebrew are missing, the app offers to install them with one click
• Single admin prompt — batches all smartctl commands into one authentication
• Native macOS UI — sidebar + detail, dark/light mode, native materials

Requirements

• macOS 14.0+ (Apple Silicon or Intel)
• Internet connection (only if auto-install is needed)

Usage

1. Open DiskInfo.app or run from source:

   swift run

2. If smartctl is not found, the app will offer to install it automatically (one click).
3. Authorize the admin prompt to read SMART data (one-time per session).

No manual setup required.

Build from Source

git clone https://github.com/Swallow74/DiskInfo.git
cd DiskInfo
swift build -c release
cp .build/arm64-apple-macosx/release/DiskInfo DiskInfo.app/Contents/MacOS/DiskInfo

How It Works

The app uses two command-line tools behind the scenes:

• diskutil (built into macOS) — lists disks and retrieves basic info (model, size, interface)
• smartctl (from smartmontools) — reads detailed SMART/health data via NVMe or ATA protocols

If smartctl is missing, the app auto-installs it via Homebrew (brew install smartmontools). If Homebrew itself is missing, it installs that too. All privileged operations run through a single osascript admin-authenticated call.

License

MIT