![]() ![]() As you’d expect, although the platter is rotating at a fixed rate, the outside edge of the platter is moving faster than the inside edge. HDDs use a magnetic read/write head to access a fast, rotating round platter, typically spinning at 5,400 or 7,200 revolutions per minute. So never defrag a SSD, OK? For more background on the difference between SSDs and HDDs, check out this recent Tech 101 post on the Rocket Yard.ĭefragging is short for “defragmentation”, the process of organizing the files on a hard disk drive to optimize how it reads and writes those files. Note: SSDs do not use a spinning platter to store data instead, data is stored and accessed from flash memory. Attempting to defrag an SSD or Fusion Drive is actually dangerous to the drive, as it can reduce its lifespan. ![]() In this Tech 101, I’ll talk about why defragging is largely unnecessary on a Mac and how to do it if you’re one of the users who may need to defrag a HDD. Well, they won’t find any command or utility to let them do that on a Mac. After a few years, all computers seem to slow down somewhat, and new Mac owners might think back to the solution that they turned to on those Windows computers - defragging the hard disk drive (HDD). With sales of Macs reaching an all-time high, there are a lot of new users who are coming over from the world of Windows PCs.
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