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Windows 7: How do I *completely* kill all files when re-installing

15 Jan 2010   #21
sevicetech

Windows 7/Linux Ubuntu
 
 

Quote   Quote: Originally Posted by ignatzatsonic View Post
Who made your hard drive?

The drive utilities at the manufacturer's web site nearly always include a method to write zeros to the entire drive, as you might do before disposing of it. I used it recently on a Western Digital drive.

You don't need to burn a disc.

I am guessing these apps will work when you have a one drive system. It may be that you have to connect the drive to another working system, but I doubt it. I've always had an OS drive available.

Pauly is correct about required time.
If the drive is going to the trash anyways just take a sledgehammer to it.


My System SpecsSystem Spec
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16 Jan 2010   #22
shiphen

Windows7 Pro x64
 
 

Thanks Theog - I'll have a look.

Meanwhile on my own freshly installed Windows7 computer after I copied my data back on and used the PC for about 1 day, MalwareByte's Anti-Malware has discovered something called:

"Hijack.DisplayProperties"

located in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer

(Malwarebytes.org)

This sounds quite serious, no?
I can't THINK how it got there because this time round I have been extremely careful. Do you think my data could be infected??

Ship
My System SpecsSystem Spec
16 Jan 2010   #23
ignatzatsonic

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium SP1, 64-bit
 
 

Quote   Quote: Originally Posted by shiphen View Post



This sounds quite serious, no?
No.

Googling says it is a policy setting and can be ignored as if it were a false positive. Let MBAM either fix it or ignore it.

http://www.malwarebytes.org/forums/i...1&#entry121291

Google the error for additional opinions if necessary.
My System SpecsSystem Spec
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16 Jan 2010   #24
severedsolo

Windows 7 Ultimate X64 SP1
 
 

i see what you mean, but im (90%) sure that a delete all partitions and windows format will not leave you vulnerable, you are right in that all your files are still there, just invisible, but if windows cant see them, windows cant use them
My System SpecsSystem Spec
16 Jan 2010   #25
surfasb

Windows 7
 
 

Quote   Quote: Originally Posted by severedsolo View Post
i see what you mean, but im (90%) sure that a delete all partitions and windows format will not leave you vulnerable, you are right in that all your files are still there, just invisible, but if windows cant see them, windows cant use them
90%?

I'm 100% sure.
My System SpecsSystem Spec
16 Jan 2010   #26
jav

Windows 7 Ultimate x86 SP1
 
 

wait..

shiphen, When you did reinstall your Windows you did custom install right?
And you did format it with Windows Install disk and recreate all partitions? (that very quick format)

If you did this, you don't have Windows old folder. So don't worry about it.
My System SpecsSystem Spec
16 Jan 2010   #27
shiphen

Windows7 Pro x64
 
 

Jav, I'm not precisely sure what you mean by a "custom install" but yes I booted of the DVD and I found a screen that said "Where would you like to install Windows7?" (or something similar) and on that screen I tried everthing: I asked it to format the partitions and nothing much seemed to happen. I deleted all partitions and recreated them again. At one point when I asked it to format a partition it paused for about 4 or 5 seconds - but clearly not long enough to do any kind of serious formatting!

What still slightly worries me is that at the time of re-creating partitions, Windows7 grabbed about 100GB for its system files (or something). Sure enough my hard disk (a 500GB Seagate - model: ST3500320NS) now says that the C: drive's capacity is only 465GB rather than 500GB. And I was slighty suspicious that Windows7 might have been lazy and that the hidden partition might not have been formatted/rebuilt.

It is probably just me being paranoid... but there again if I was a virus author (which for the record I certainly am not!) then I would certainly be exploiting any such weaknesses of Windows7.
My System SpecsSystem Spec
16 Jan 2010   #28
surfasb

Windows 7
 
 

4-5 seconds is enough time to format. It's called quick format.

It's probably being reported as 465GB because Windows uses powers of 2 to report drive space, while drive manufacturers use powers of 10.

If that confuses you , wikipedia Gigabyte or Megabyte. There will be something about drive space.
My System SpecsSystem Spec
16 Jan 2010   #29
severedsolo

Windows 7 Ultimate X64 SP1
 
 

Quote   Quote: Originally Posted by surfasb View Post
Quote   Quote: Originally Posted by severedsolo View Post
i see what you mean, but im (90%) sure that a delete all partitions and windows format will not leave you vulnerable, you are right in that all your files are still there, just invisible, but if windows cant see them, windows cant use them
90%?

I'm 100% sure.
i said 90% because if on the off chance i was wrong, and the OP had picked up a very ingenious virus, i didnt want to leave myself open to blame, what i was trying to impart was that it is highly unlikely a virus would remanifest itself, but how do you know what the next big malware attacks going to be?
My System SpecsSystem Spec
16 Jan 2010   #30
surfasb

Windows 7
 
 

By my own powers of deductive reasoning, if a program cannot exist without executable code, then a virus cannot exist without executable code....
My System SpecsSystem Spec
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 How do I *completely* kill all files when re-installing




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