When applications write files to disk, they try to record them contiguously; that is, they try to write all the file's segments back to back, so the disk head won't have to jump around when reading the files, slowing processing down.
But when you delete a file that leaves an "empty", or unused/available, space for new data. An application may come along and use that space to write a new file, but the new file is bigger than the "hole" so it will write contiguous file segments to that space until it runs out of room and then it will resume writing in another available space.
As time goes on, files will become highly "fragmented", meaning that pieces of them will be all over the disk, necessitating the relatively massive steel head to be physically moved around to read even a single file, which can slow down even a really fast computer.
A defragmenter program will rewrite the files on disk so that they are all written contiguously, or unfragmented, speeding up other file-access applications.
Think your hard drive as a public library.If people returned the books but the librarian never put it back where it was ,it will take time for the next person to find the book.The same with your hard drive.By moving files (copy,installing ,uninstalling etc) after time they get scattered and unorganized.When you try to access a program then the hard drive has to look at many locations to find the files associated with the program.This is when defragment help.It re arranges the files and put relative files next to each other for faster access.It is crucial to computers performance and you should do it once a month.
Ok, this isn't EXACTLY what happens or technically detailed. But in layman's terms:
It basically sorts all the pieces that make up the files on your hard drive.
When you delete files, it creates free space. But those bits of free space end up being scattered around your hard drive.
When that free space is later filled up, the operating system puts some of a file in one gap and some in another etc.
It eventually gets jumbled up and you have bits of files everywhere and defraging just sorts it all out. Which means your drive heads don't have to spend so much time moving around and searching.
It's like a bedroom. Your computer doesn't want to take it's time so it just leaves things lying around everywhere. Which is quick and easy at first but sooner or later, you're gonna need to clean your room.
I have to note, modern file systems don't need to be defragmented as much as the older ones like FAT based systems as the newer ones are more efficient.
It allows your hard drive to operate faster by gathering together files that have had pieces saved in different places on the drive. Deleting and moving files results in parts of some files being fragmented and stored in multiple pieces, which then requires finding each piece on different parts of the drive, taking a longer time. Defragmenting the drive finds these separate parts of your files and puts them back together so that they can be found more quickly.
In easy terms, after a while, your files get scattered all over the computer, or "fragmented". That makes the computer take a longer time going through them all. Defragmenting puts them all in a better order for quicker access, thus making your computer faster.
It puts fragmented files together, .It will make your computer run faster .There is a tester on newer computers to see if it is recommended.If your computer has slowed down it will probably help
it gathers up all the free space you've left behind when deleting something (ie picture, music file...) and groups all the spaces together making it faster
Comments
When applications write files to disk, they try to record them contiguously; that is, they try to write all the file's segments back to back, so the disk head won't have to jump around when reading the files, slowing processing down.
But when you delete a file that leaves an "empty", or unused/available, space for new data. An application may come along and use that space to write a new file, but the new file is bigger than the "hole" so it will write contiguous file segments to that space until it runs out of room and then it will resume writing in another available space.
As time goes on, files will become highly "fragmented", meaning that pieces of them will be all over the disk, necessitating the relatively massive steel head to be physically moved around to read even a single file, which can slow down even a really fast computer.
A defragmenter program will rewrite the files on disk so that they are all written contiguously, or unfragmented, speeding up other file-access applications.
Think your hard drive as a public library.If people returned the books but the librarian never put it back where it was ,it will take time for the next person to find the book.The same with your hard drive.By moving files (copy,installing ,uninstalling etc) after time they get scattered and unorganized.When you try to access a program then the hard drive has to look at many locations to find the files associated with the program.This is when defragment help.It re arranges the files and put relative files next to each other for faster access.It is crucial to computers performance and you should do it once a month.
Ok, this isn't EXACTLY what happens or technically detailed. But in layman's terms:
It basically sorts all the pieces that make up the files on your hard drive.
When you delete files, it creates free space. But those bits of free space end up being scattered around your hard drive.
When that free space is later filled up, the operating system puts some of a file in one gap and some in another etc.
It eventually gets jumbled up and you have bits of files everywhere and defraging just sorts it all out. Which means your drive heads don't have to spend so much time moving around and searching.
It's like a bedroom. Your computer doesn't want to take it's time so it just leaves things lying around everywhere. Which is quick and easy at first but sooner or later, you're gonna need to clean your room.
I have to note, modern file systems don't need to be defragmented as much as the older ones like FAT based systems as the newer ones are more efficient.
It allows your hard drive to operate faster by gathering together files that have had pieces saved in different places on the drive. Deleting and moving files results in parts of some files being fragmented and stored in multiple pieces, which then requires finding each piece on different parts of the drive, taking a longer time. Defragmenting the drive finds these separate parts of your files and puts them back together so that they can be found more quickly.
In easy terms, after a while, your files get scattered all over the computer, or "fragmented". That makes the computer take a longer time going through them all. Defragmenting puts them all in a better order for quicker access, thus making your computer faster.
It puts fragmented files together, .It will make your computer run faster .There is a tester on newer computers to see if it is recommended.If your computer has slowed down it will probably help
it gathers up all the free space you've left behind when deleting something (ie picture, music file...) and groups all the spaces together making it faster
compresses all the files together, to take up less memory. which makes your computer go faster
it compresses all the files on your computer and frees up disk space
idk, i think it's suppose to reorganize your computer so it'll run faster