What is disk defragmentation and what is disk defragmentation used for

Disk defragmentation is to reorganize the fragments and messy files generated by the computer disk during long-term use through system software or professional disk defragmentation software, so as to release more disk space and improve the overall performance and running speed of the computer. By tidying up, you mean sorting out the files that you have ostensibly deleted but are actually taking up space on your disk.

Hehe, of course you can tidy up, and tidying means tidying, not deleting or cleaning up! Defragmenting a disk is best done with the tool that comes with your system, as it is the safest, but it is slow! Generally, you don't need to tidy it up often, just tidy it up in a few months!

Of course it works, especially if you often install, uninstall, and delete files, it works very well. Disks can be organized to save space.

It's okay to do it once every few months, and it will hurt the hard disk a lot.

After the computer is used for a period of time, due to the access and deletion of files, the files and free space on the disk will become relatively scattered, one here, one there, we call it"Fragments"。If this situation is not organized, the disk access efficiency will be reduced. A disk defragmenter, on the other hand, is to place stored files in a contiguous space, so that the free disk space becomes a whole block.

Disk is like a warehouse, its function is to store and place, when the warehouse is messy, what should we do, isn't it tidy, disk defragmentation is to tidy up the disk. And delete useless things, clean up, and, if there are errors on the disk, disk defragmentation can also fix the initial errors or problems of the disk, such as bad sectors. The way a disk runs is read and write, and if it has an effect on it, then the disk itself is not of good quality.

This doesn't have much to do with disk defragmentation. When the disk is tidy, it is convenient for the head to store things (I think this is the reason why the disk is faster after defragmentation), but it reduces the impact on the disk when things are stored repeatedly because the disk is not tidy and has fragments. There is also the protection of the disk, that is, do not collide, do not low-level formatting.

Normal disk operations, including advanced formatting, will have no effect, so don't worry! As for the impact, turning on the computer will have an impact on any hardware and software of the computer, and we won't choke on it. Of course, I'm not saying.

If you want to defragment the disk regularly (it is not necessary), when you feel that there is a problem with the hard disk, you can organize the disk again, and you can usually do it once every few months. Not to mention, there seems to be no precedent for hard disk damage due to disk defragmentation.

The biggest impact on the hard disk: 1: Hard disk collision. 2: Sudden power outage. 3: Low-level formatting. 4: Regular abnormal shutdown.

The impact is relatively large, often if the disk is not fragmented for a long time, not only the computer response is very slow, but also sometimes the hard disk will make abnormal noise, and other superficial phenomena. Let's take a closer look at disk fragmentation.

Part 1: What is disk fragmentation? Disk fragmentation should be referred to as file fragmentation because files are dispersed and saved to different places throughout the disk, rather than being continuously saved in a continuous cluster of disks. After a hard disk is used for a period of time, due to repeated writing and deletion of files, the free sectors in the disk are spread out to discontinuous physical locations throughout the disk, so that files cannot have contiguous sector classes.

In this way, when reading and writing files, you need to read them in different places, which increases the back and forth movement of the head and reduces the access speed of the disk.

2. Disk fragmentation When the physical memory required by the application is insufficient, the general operating system will generate temporary swap files in the hard disk, and use the hard disk space occupied by the file to virtualize the memory. The virtual memory manager will frequently read and write to the hard disk, resulting in a large amount of fragmentation, which is the main reason for the fragmentation of the hard disk. Others, such as temporary files generated by Internet Explorer when browsing information or the setting of temporary file directories, will also cause a large number of fragments to form in the system.

File fragmentation generally does not cause problems in the system, but too many file fragments will cause the system to look back and forth when reading files, causing the performance of the hard disk to deteriorate, and in serious cases, shortening the life of the hard disk.

3. The significance of disk defragmentation Hard disks are like houses that need to be organized more often, and to organize disks, you need to use the "disk defragmenter", which can defragment volumes formatted using the File Allocation Table (FAT) file system, FAT32 file system, and NTFS file system. Disk defragmentation is actually the process of rewriting files on the hard disk to maintain the continuity of the files.

Only reading and writing the hard disk for a long time in a row will cause some damage to the disk, but defragmenting does not hurt the hard disk, because most people do not organize it once a day, and the time for each cleaning is very short, and they will not read and write the hard disk for a long time. Don't worry too much about the fact that defragmentation can hurt the life of your hard drive. It is recommended to defragment the disk once or twice a month at most to keep the read and write speed of the hard disk in the best condition.

4. Disk defragmentation interval.

The general home user organizes it once every month, and the business user and server organize it once every half a month.

5. The system comes with defragmentation under Windows Windows 7, the same as checking the disk before, right-click the partition, select Properties, and enter the "Tools" tab, the second item is defragmentation. Disk Utility interface.

We choose Defragmentation, click Start Defragmentation to enter the disk defragmenter under Windows 7. Disk defragmenter under WIN 7.

The defragger under Win 7 is a bit foolish, so after customizing the scheduled task and selecting the corresponding partition, just click "Defragment Now" and wait.

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