Blackmagic Disk Speed Test

it worked well before... but now, under High Sierra, it won't open. Nothing happens... :-(

Good tool to get a good result of the performance of attached drives

Worked great under 10.10 Yosemite. Under 10.11 El Capitan, Blackmagic Disk Speed Test 2.2.2 reports every disk as locked, and therefore not testable. :-(

Version 2.2.2 crashes instantly on OS X 10.6.8. You can fix this but I would say the solution is definitely NOT worth it. First, download and install MacPorts (free open-source) for Snow Leopard from: https://www.macports.org/install.php Make sure you get the Snow Leopard one. After MacPorts is installed, go to Applications > Utilities > Terminal and run the following command: sudo port selfupdate Then run the following command, which may take like an hour to compile: sudo port install clang-3.3 -analyzer -python27 Then run the following command, which may also take like an hour to compile: sudo port install libcxx +universal configure.compiler=macports-clang-3.3 After you've done all this, Blackmagic 2.2.2 will open properly again (and congratulations on your determination and patience).

Na 10.6.8 verze 2.2.2 krachne ihned po spustení

Ok, now that I've tried it, there appears to be no way to get a log of the test results. So how is one supposed to compare one disk with another? It reports multiple results for different kinds of video files and file sizes. It's not practical to write those results down by hand - or remember them. So BD's got a nice, fancy interface. But that's not enough by half. Without a reporting feature it's all but useless.

This use to be my favorite app for testing the speed of disks. However, as of OS X 10.9.5, it can only test the start up drive. If I try to select another drive, the app FREEZES. You have to force quit it to stop it. And until you do, it can take up 100% of the CPU time of one of your Intel Cores. Unfortunately, this app hasn't been updated since October 25, 2012. it is now December 24, 2014. So this app has gotten old. And it has developed incompatibility with the latest OS X.

version after 2.1 not reliable with SSD because is not considering firmware compression algorithms. performances measured are 50% of real speed. :-(

Does what it says... although would be nice to read/write multiple test files at the same time to test stream playback.