I use the word 'partially' because some of you may not know the differences between the disk defragmenter and the drive optimizer. On the other hand, the saying that you should never defragment your SSD may be just 'partially' right. However, too many fragments will cause the drive heads to look back and forth while reading the file, causing system performance degradation and severely shortening the life of the HHDs.

When HHDs read or write data, the drive 'heads' should be positioned in right locations. HDDs operate using a physical spinning platter and drive 'heads'. These scattered sectors are called fragments. As many of us know, after the hard disk is used for a period of time, the file defragments are scattered to the discontinuous physical locations of the entire disk due to repeated writing and deleting of files, so that the files cannot exist in consecutive sectors. Generally speaking, disk defragmentation is only suitable for HDDs. Many of you may have heard before that you should never defragment your SSD because the conventional wisdom says defragging an SSD would reduce its life. I have just learned that one should 'Never defragment your SSD'. However, after learning more about SSDs, you may have questions like the following one. Many of you may have upgraded your computer to SSD or are planning to do that. Over the last few years, SSDs have become the standard storage device for computer enthusiasts and gamers.

How to defrag in windows 8