what is disadvantage of defrag??

This pertains to spinner hard drives NOT SSD's.

This is what happens as you write files.> File system fragmentation - Wikipedia, the free encyclopedia

This is what defrag accomplishes.> Defragmentation - Wikipedia, the free encyclopedia

Windows defragger is quite sufficient and should be used.

Let me state it more strongly...

Unless you have an SSD drive, it is very important to use some defrag program. If you don't, your computer will (over time) start slowing down... Eventually you will experience lots of issues...

I can't think of a single disadvantage to defragging a Hard Disk Drive. For Windows 7 I say use the built defragger. It is set to run automatically be default anyways so you don't even have to worry about most of the time. On XP and earlier Windows versions I would say use a 3rd party defragger.

Windows will defrag with the built-in tool in the background. Prior to having an SSD, I honestly hardly EVER ran a defrag process manually.

ningpra said:

hmmm

so is there a sign ??
that i need to do a defrag??

Not really. Your system performance will degrade so slowly you will not notice it. I find it adequate to defrag once a week. That way it is relatively quick and keeps everything running well. You probably will want to clean out temporary files before you do the defrag.

Elan said:

Let me state it more strongly...

Unless you have an SSD drive, it is very important to use some defrag program. If you don't, your computer will (over time) start slowing down... Eventually you will experience lots of issues...

I agree with the first thing you said. Now, on to the second thing. Yes, your computer will slow down if not defragged, but it won't expierience issues (unless you are talking about performance issues) Freagmentation does not affect the stability of your computer, but it does affect the performance of your computer. I just wanted to clear that up for you:)

Nivas said:

Try the free defragger from Auslogics.

I, strongly, do NOT recommend the use of third party defraggers. The Windows built in disk defragmenter works perfectly. If you are not satisfied with the performance of your hard drive, you should get an ssd like I did. They make a HUGE difference.