The application will continuously write a temporary file to your drive and then read it back, updating the dual speed gauges in real time. How to Read the Results
Solid-state drives get hot during extended read/write cycles. If speeds drop drastically after a few minutes of testing, your drive may be slowing down to prevent overheating. Ensure your external drives have adequate cooling or aluminum heat sinks. blackmagic disk speed test mac download dmg
If the test fails to start, verify your drive permissions. External drives formatted in Windows NTFS cannot be written to by macOS without third-party drivers. The application will continuously write a temporary file
If you are a video editor, content creator, or simply a Mac user wondering why your system feels sluggish, testing your drive's performance is the first step to troubleshooting. Blackmagic Disk Speed Test is the industry standard for measuring storage performance. It provides a quick, visual way to see if your hard drive or SSD can handle high-resolution video editing. Ensure your external drives have adequate cooling or
This section breaks down the exact frame-per-second (FPS) read and write speeds your drive supports across various popular video editing codecs, such as Apple ProRes 422 HQ and CinemaDNG RAW. How to Run a Test and Analyze Results