Disk fragmentation should be called file fragmentation, because files are scattered in different places throughout the disk, rather than being stored in continuous clusters of disks.
After the hard disk is used for a period of time, due to the repeated writing and deletion of files, the idle sectors in the disk will be scattered to discontinuous physical locations throughout the disk, making it impossible for files to exist in continuous sectors. In this way, when reading and writing files, you need to go to different places to read them, which increases the back and forth movement of the magnetic head and reduces the access speed of the disk.
Extended data
Disk fragmentation will reduce the overall performance of the system.
If the files are stored in different clips, when the files are opened, the computer must search the hard disk to put the clips back together. The response time may be much longer.
Disk Defragmenter is a Windows utility program, which is used to merge files and folders stored in different fragments on a computer hard disk, so that any one of these files and folders only occupies one space on the disk. When files are stored neatly and without fragments end to end, the speed of disk reading and writing will be accelerated.
In addition to running the Disk Defragmenter regularly (preferably once a month), if certain events occur, you can run this utility in addition to the usual once a month.
You should run Disk Defragmenter if:
1, adding a large number of files.
2. Only about 15% disk space is available.
3. A new program or a new version of Windows is installed.