Simple UI That is Not Intuitive

This is an example of simplicity that is not intuitive. There is no information on how to use the tool, just two speed dials, a large “Start” button and a settings button in the center, and a table of data at the bottom. There is no explanation on what “stress” size to choose, and once the tool starts, it never stops until you click on the “Start” button again. I had to read the documentation to learn that is how one stops the tool. There is no indicator or information in the UI to tell you how many times you should let the reads and writes complete, or a progress indicator. The UI for selecting the drive to test looks like Finder, so at first I thought I clicked on Finder accidentally, rather an intuitive UI (e.g., radio button) to select the available drives. The data table has no explanation in the UI.

Also, you cannot easily test the internal drive where the OS resides, since after I read NothingToGain’s review, I learned you have to, via OS X, temporarily provide everyone with write permission to the drive in order to do the test. Again, this information should be provided in the UI.

As for the data, I have not verified it, but I will give it the benefit of the doubt given others on the Internet have indicated that it works.

DanPaloAlto about Blackmagic Disk Speed Test