Disk defrag must be run regularly (or set to auto defrag) to keep the hard drive free of fragmentation and maintain the performance of the computer at a high level. Fragmentation of files (occurs 'naturally' when you write or modify a file on the hard drive).
Windows comes with a built-in defragmenter, but it's not very good IMO: it's very slow, doesn't defrag all files (especially important system files), doesn't defrag properly when disk space is low, and is not flexible.
----------------------------------------------------------------------------------------------------
Its good to be proactive when it comes to defrag because once the fragmentation levels become high or if your free space drops below 15%, it be comes very difficult to defrag with the native disk dferagmenter. It also takes a very long time to complete the defrag.
disk defragmenter
Disk Defragmenter
Disk Defragmenter
Notepad and disk defragmenter do not use the same resources. However, Notepad can be used to open disk defragmenter from the system file.
disk defragmenter
The Disk Defragmenter can be found by pressing the windows button + R and then type "dfrg.msc" without the quotations.
In order to run defrag, you need to have admin rights, so you have to log in accordingly.
Disk Defragmenter is a very slow program on most computers so it is reccommended that you do not open programs while it is running, or else there is a high risk of crashing your computer. It makes disk defragmenter goes even slower, which would probablly result in crashing the computer.
It's called disk defragmenter. Windows has an in built disk defragmenter which I haven't found to be that good. Lot of times you would find that it starts from 0%. Primarily it is due to other programs running and accessing the disk. So a better tool that I've used and I'm quite satisfied is Piriforms Defraggler (http://www.piriform.com/defraggler) Try it out once and I'm sure you'd also like it.
To open Disk Defragmenter, click Start, point to All Programs, point to Accessories, point to System Tools, and then click Disk Defragmenter.
run scandisk and disk defragmenter, try copying less files at once.
disk defragmenter pieces fragmented memory in the hard drive of the computer in question back together to speed computer performance. if u r trying to do this on a personal computer, then it doesnt matter at all. but u should run disk cleanup first or it may take awhile to defragment.