Defrag simply compacts and organizes files and folders on your hard drive.
The problem arises because of the way data is stored on the hard drive.
When you delete a file, all you are doing is removing the index, of where the data is really stored.
When you then save stuff, reference is made to the index, to find out where the free areas are, on the disc. Use is made of all the free areas on the disc.
The free spaces may be smaller than the new file being stored. So the file is broken up and parts of it located all over the physical drive, blotting up the free space.
Over time, your drive is full of fragmented files and the drive has to work harder and longer to find all pieces of file, slowing it down.
'Defrag' locates all pieces of broken files and writes them to a fresh area of the disc, so that they are located in one 'contiguous' physical space. It then clears the disc where they were located. Once enough clear area is provided the whole files are then relocated into the space in such a manner as to keep all relevant files close together and so speed up the access time of the hard drive.
No! In fact, it's best that you're NOT online while doing a defrag. Anytime defrag hits a part of a hard drive where the information is changing, defrag restarts doing that portion of the drive. While on the Internet, your PC is constantly sending and receiving files and changing what's on the hard drive. Your defrag will take a lot longer.
In order to run defrag, you need to have admin rights, so you have to log in accordingly.
== == This depends on what you use your computer for and how often you add software to it. I use my computer 24/7 quite intensively, so I defragment every other day. My computer is set to do so at a time when I am not using it. I recommend that the average user defragment once a week. I also recommend looking at getting O&O Defrag if this is something that you believe is very important to your computer. You might have to free up space to begin a defragmentation; the computer needs spare space to temporarily move the files around.
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You don't need to defrag the system reserve but if you want to anyway there is a program called auslogis disk defrag that lets you defrag system reserve
Defrag
depends on the OS, but for most it is : defrag <DRIVE> example: defrag c:
No! In fact, it's best that you're NOT online while doing a defrag. Anytime defrag hits a part of a hard drive where the information is changing, defrag restarts doing that portion of the drive. While on the Internet, your PC is constantly sending and receiving files and changing what's on the hard drive. Your defrag will take a lot longer.
Start-All programs-accesories-Systerm tools-defrag
Many people believe that your computer will work more efficiently if you defrag it regularly.
Usually not, The best Defrag program to use is the one the came Pre Installed in windows its located under Start, All Programs, Accessories, Tools - Or System Tools Defrag. What defrag does is put similar files together in order kinda like how a library puts books on a shelf, That way they can find them easier defrag is virtually the same.
1 . Mac machines which comes with HDD requires defragmentation. SSD's no need. 2 . You don't need to regularly defrag a Mac's hard drive, OS X has HFS+ file ,which automatically defrag files of certain size. 3. Download Stellar Drive Defrag 4.. Install it and scan whole Mac, it will take some time and defrag your Mac properly.
A defrag program sometimes skips the files that contain like 2-4 fragments so it won't need to make space for that file because it's to large. Some programs have the option to defrag to defrag every file without skipping one.
Fragment, defrag.
A defrag should not affect your videos at all. However, it could affect your media player(s).
It would'nt take forever but yes, normally the bigger your hard drive is, the longer it takes to defrag. It also depends on how bad the hard drive is in need of the defrag.