Not exact matches
On a
mechanical hard drive,
defragmenting is beneficial because the
drive's head has to move over the magnetic platter to read the data.
However, if you do have a
mechanical hard drive and you've just put a lot of files on the
drive — for example, copying a huge database or gigabytes of PC game files — those files might be
defragmented because Windows hasn't gotten around to
defragmenting them yet.
If you have a
mechanical hard drive, leaving at least 15 % of it empty can reduce fragmentation in newly created files and make it easier for Windows to properly
defragment the
drive, which is something modern versions of Windows do automatically in the background.