How does disk defragmentatiom improve system performance?

Question

How does disk defragmentatiom improve system performance?

Answer 1

the purpose of defragmentation is to arrange ur files.

each file is divided into many small units called fragments.

they are written to ur hd. These fragments are not continuous...

They are just like a linked list.

Each part, has data and address to next data. By using the address, the os can get to the next data. And from there to next. It goes on continuously till the file is over.

But each time, the calling of address is made, time is wasted.

Defragmentation arranges the fragments of files closer or continuously. Hence this access time is reduced considerably.

Answer 2

It speeds up the hard drive, transferring files works a little faster.

Answer 3

Ok, so, here's a paragraph or two regarding the basics of disk usage and fragmentation:

Fragmentation is when the OS can't allocate enough memory to store a complete file within an empty block of space, so it must spread it out within gaps between other files on the disk. These gaps appear due to file deletion, or previous file fragmentation.

Now, imagine you're trying to read the file. Since it's spread out on the disk, the head must skip back and forth to read it's entirety. Defragmenting attempts to combine these files back into a single unit so the head doesn't need to go all over the place. Therefore, it makes reading faster, allowing better performance.