Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: New System with Old Hard-drive. Seeking advice.

29 Sep 2011   #11

Windows 7 64 bit

Awesome. Great advice again. Thanks for the links as well theog and gregrocker.

I think I have one final question. What are the physical differences between using diskpart clean all where it writes 0's to the hard-drive and deleting the current partitions (I have technically 2: 99% of the HD space and the System reserved) through windows installer and then saying: format my hard-drive so windows can install "cleanly".

More directly, what does windows actually do when it deletes the partition...does it just delete pointers (I have some level of how hard-drives work and I'm curious exactly what happens)?

Thanks again folks!!

My System SpecsSystem Spec
30 Sep 2011   #12

Windows 7 Ultimate x32

Writing 0's over the surface is called a "pass". You can use a third party utility to basically ensure no old data can be recovered from a disk by making several passes over the surface of the disk.

For the sake of simplicity, deleting a partition during windows setup, creating a new one, and then doing a full format of that partition generally erases everything on the drive. (If given the option do a full format after recreating the partition).

How well windows does a pass / format of your drive - debatable I guess...but it works just fine.
My System SpecsSystem Spec
30 Sep 2011   #13

MS Windows 7 Ultimate 64-bit SP1

Here is an excellent article on Disk partitioning from wikipedia...

It should answer most of your questions.

About cleaning the hard disk for security purpose..
There are various methods.

I am not well versed with diskpart.exe of Windows 7 OS.
Many utilities do exist for deleting the data securely from a partition.

CCleaner (a free utility.... Not again... free publicity to Piriform .....) is one of them which I use..... It gives options to clean the drive (whole drive or only the free space including MFT free space).

Simple overwrite (1 pass)
Advanced overwrite (3 passes)
Complex overwrite (7 passes)
Very Complex overwrite (35 passes)

One of the options (depending on how much paranoid someone is about his/her sensitive data - no pun intended) should do the trick.

Another excellent article on Data erasure methods and standards on wikipedia to satisfy your curiosity.
My System SpecsSystem Spec


 New System with Old Hard-drive. Seeking advice.

Thread Tools

Similar help and support threads
Thread Forum
Seeking iOS syncing advice
Not sure where to post this, so I apologize if this isn't the right spot. Feel free to point me somewhere else. I'm running Win7 x64 Pro. I use Outlook 2010 for contacts, calendar, and notes, and iTunes for music. I use an iPhone 6s and iPad 4. When iTunes and the iPhone first came out,...
Seeking advice on Windows 7 setup
Greetings, I am currently running Windows 7 64 bit on a 4 year old Dell desktop. Originally this machine had Windows Vista. The Windows 7 upgrade disk/license I bought required me to install Windows 7 over Windows Vista. I was unable to do a clean install. I researched this quite...
Installation & Setup
New computer, seeking advice!
Hi people, i recently bought a new computer with an installed Win7HomePremium. It is fairly good and these are a few of the properties: Intel i3 540 4GB memory 32bit OS (if u need more ask)
General Discussion
Several BSOD's Seeking Advice
First of all i would like to thank all the helpful staff here that provide free technical support and help people out. Now. I have some serious problems. To make it easier for the helpers i am going to tell the stuff i did and the problems i have found. I Formatted my Harddisks and...
BSOD Help and Support
Seeking video card advice
I do not use my desktop for gaming. I want to use Windows 7 dual monitor capability to connect via HDMI to a home theater AV receiver and HDTV in another room. So am looking for a PCI-E x16 video card with HDMI output. The GeForce GT 220 is inexpensive and seems to have what I need. But I don't...
Graphic Cards

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd

All times are GMT -5. The time now is 03:48.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App