![]() Linux and macOS use file systems that either reduce the probability of fragmentation or implement automatic defragmentation features.Linux and macOS systems do not need defragmentation for the opposite reasons that Windows needs defragmentation. ![]() Windows operating systems may need to defragment their disks every once in a while, and there are two reasons behind this problem: one is that Windows uses a very simple file system called FAT, which is designed in such a way that the same files may be scattered in different locations on the disk, and the other is that solid state drives were not popular in the ancient times and mechanical hard drives have poor random read and write performance. From personal experience, the author has not defragmented a disk in macOS for the past seven or eight years, and you won’t find any related operations in today’s disk tools, only the diskutil command to set whether a disk is defragmented on or off. ![]() I believe that many software engineers today use Linux or macOS systems, and unlike Windows, we hardly see the concept of disk defragmentation.
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