Many people believe that your computer will work more efficiently if you defrag it regularly.
With Windows XP if any programs (even those running in the background) or the screensaver interrupts the defrag, it will restart/hang. In Vista, the defrag is designed to defrag at a certain schedule in low priorty in the background. In order to defrag and use the PC at the same time you need to use an automatic defragmenter like Diskeeper which runs in the background in invisitasking mode and defrags silently without conflicting with other programs.
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.
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.
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
Defrag
depends on the OS, but for most it is : defrag <DRIVE> example: defrag c:
No, when you install Diskeeper it replaces the built-in utility.
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
defrag/Defragment
I believe you are recommended to defrag your computer at least once a year but to be safe i usually run one every 2 months or so. I personally recommend you use a program called defraggler which does a good job at defragging.