For years tech people have debated whether or not to defrag Mac hard disks. Supposedly, the macOS takes care of the defragging process on its own. I have not defragged a hard drive in years. What about SSD’s (Solid State Drives)? Should we defrag SSD’s? This article clears up the defragging conundrum and explains when and when not to defrag your drive. Give it a read, it is very helpful.