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Windows 7: Does Formatting a drive replaces the need to defrag it?

05 Feb 2012   #1
GbeTech

Win7 Pro SP1 64
 
 
Does Formatting a drive replaces the need to defrag it?

I've been wanting to reinstall Windows on a formatted drive for a time now. Recently a problem came up which the solution for is to defrag my drive.

Will formatting the drive remove the need to defrag it afterwards? I mean, a bunch of nothing is as orderly as it can be...


My System SpecsSystem Spec
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05 Feb 2012   #2
gregrocker

 

No, a format does not defrag.

When you clean reinstall it will format the partition before install even if you don't do it yourself. It's just a minor preparation step, not some big erasure or Disk Check that many think.

Defragging does order the HD better and is good to do occasionally after running awhile. I use free Puran Defragger for it's boot time defrag which gets at System files. You can also have it do a Full Disk Check at the same time which checks and repairs the Files system which lives on the HD. Any more serious problems should be tested by running the HD maker's HD Diagnostic extended CD scan.

Adapt these steps to get a perfect clean reinstall of Win7: Reinstalling Windows 7
My System SpecsSystem Spec
05 Feb 2012   #3
GbeTech

Win7 Pro SP1 64
 
 

Thanks for the quick reply but I don't think you understood my answer?
Basically it was, does formatting does what defragging supposed to do + delete everything? does format>defrag?
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05 Feb 2012   #4
lehnerus2000

W7 Ultimate SP1, LM18 MATE, W10IP VM, W10 Home, #All 64 bit
 
 
Built-in Defragger

Don't forget that W7 has a built-in Defragger.
It automatically defrags your HDD (scheduled for 1:00 AM or 2:00 AM Wednesday mornings).
You can also run it manually.

That said, I use Piriform's Defraggler (before I create my monthly backup images).

IIRC:
Formatting "deletes" the directory/file allocation table (quick).
Low level formatting overwrites the blocks (slow).

If you format your HDD, you don't have to defrag it, as there is "nothing" on it.
My System SpecsSystem Spec
05 Feb 2012   #5
Lemur

Systems 1 and 2: Windows 7 Enterprise x64, Win 8 Developer
 
 

The purpose of defragging a drive is to organize files contiguously. When a drive has been formatted, the index is erased and allows the computer to write to each block. Therefore defragging is not needed afterward.

As an aside, I don't think Win 7 does a low level format (not sure). Gparted, for example, does allow a low level format.
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05 Feb 2012   #6
lehnerus2000

W7 Ultimate SP1, LM18 MATE, W10IP VM, W10 Home, #All 64 bit
 
 
Command Prompt

Quote   Quote: Originally Posted by Lemur View Post
As an aside, I don't think Win 7 does a low level format (not sure). Gparted, for example, does allow a low level format.
I think that you need to use the "Command Prompt" to do that.
My System SpecsSystem Spec
05 Feb 2012   #7
Lemur

Systems 1 and 2: Windows 7 Enterprise x64, Win 8 Developer
 
 

Duh. I should just follow Brink's tutorial on llf using diskpart.

Disk - Clean and Clean All with Diskpart Command
My System SpecsSystem Spec
05 Feb 2012   #8
GbeTech

Win7 Pro SP1 64
 
 

Thanks lehnerus2000, that's what I needed to know.
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 Does Formatting a drive replaces the need to defrag it?




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