The app will display the read and write speeds of your drive in MB/s.Ħ. Click the Start button to begin the test.ĥ. Choose the size of the test file (1GB, 2GB, or 5GB).Ĥ. Open the app and select the drive you want to test from the drop-down menu.ģ. Download and install the app from the Mac App Store.Ģ. Using Blackmagic Disk Speed Test is easy. If you’re working with large files, you might want to consider using an SSD instead of a traditional hard drive. For example, if you’re editing video, you’ll want to have a fast drive with a high write speed so you can scrub through footage quickly. Running a speed test can help you identify the problem.įinally, it can help you optimize your system for specific tasks. If you’re noticing slow load times or sluggish performance, it could be a sign that your hard drive is running slower than it should be. Second, it can help you diagnose any performance issues you’re experiencing. Knowing your drive’s speed can help you choose the right storage solution for your needs. First, if you’re working with large files like video or audio, you’ll need fast storage to keep up with the demands of your projects. Knowing the speed of your drives can help you in a few ways. The results are displayed in megabytes per second (MB/s). It creates a large file on your drive and then measures how quickly it can read and write that file. It’s developed by Blackmagic Design, a company known for creating professional video editing software and hardware.īlackmagic Disk Speed Test measures the read and write speeds of your drives by simulating a real-world scenario. That’s where Blackmagic Disk Speed Test comes in.īlackmagic Disk Speed Test is a free utility that allows you to test the speed of your Mac’s hard drives, solid state drives (SSDs), and external drives. You can easily detect when a device is performing subpar and, and with the spinning disk, you can see is transfer speeds deteriorates over time.Have you ever wondered how fast your Mac’s drives are? Whether you’re a professional video editor or just someone who likes to keep their system running smoothly, it’s important to know what your computer’s storage capabilities are. I have run Blackmagic on USB 2, thumb drives, USB 3, and USB C devices to see if I’m getting my money’s worth. On an older PC the rates I see are 500 MB/S both read and write, as you would expect. I have tried this on my older mackbooks with SSD and they do scale down as the device is older. On my 2016 PC, I am seeing speeds like 1,000+ MB/s write, and 1100+ MB/S read. Since the “volume” is on your Startup Disk, you will see how fast it drive is. In Blackmagic select the disk image mounted. Mount the volume (if it is not already mounted). Make it big enough for Blackmagic to work with (7+ GB) and name it what you will. Create a disk image (.dmg) using the disk utility specifying file->new image->blank image. I found a workaround that will report the rates of the Startup Disk. When Blackmagic tries to read the Startup Disk, you get the message that the device is not writeable, hence you cannot rate the the transfer rates of the drive. Blackmagic has been updated to adequately report the speed of SSD devices.
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