No hidden costs, completely free from the Mac App Store. How to Download Blackmagic Disk Speed Test for Mac (DMG)

Click the above the start button to select your target drive (if testing an external SSD).

The first time you open it, macOS may say "cannot be opened because the developer cannot be verified."

This utility was designed for video editors to check if their storage can handle demanding video formats. However, it is an excellent tool for any Mac user.

Ensure your external SSD is connected to a compatible high-speed port. Using a USB-C cable rated only for charging will bottleneck your performance to USB 2.0 speeds (around 40 MB/s).

To ensure your Mac remains secure from malware, always download the software from official sources. Follow these steps to secure the correct DMG file. Step 1: Visit the Official Website

The browser will download a compressed file containing the official .dmg installer. Method 2: Download via the Mac App Store (Recommended)

While the app is user-friendly, users sometimes encounter common issues. Here’s how to address them:

The Blackmagic Disk Speed Test results provide a detailed report of your disk's performance, including:

: Use APFS (Apple File System) for modern macOS environments to ensure optimal speed. To help tailor this information, tell me: What specific drive model are you trying to test? What video format or resolution are you planning to edit? Are you experiencing performance issues or lag right now?

If you use Blackmagic capture cards or hardware, you can download the installer from the Blackmagic Design Support Center.

How to Download Blackmagic Disk Speed Test (DMG) for Mac

If you have downloaded the .dmg file, follow these steps to install:

A: Indirectly – mount the NAS via SMB/AFP first, then select it. Results reflect network + drive speed.

If you are running an older version of macOS (like Mavericks or High Sierra) and cannot use the App Store, the Disk Speed Test is often bundled within the Blackmagic Desktop Video software package available on the Blackmagic Design Support Page How to Run Your First Test