Wiping a Drive

Written by Allen Wyatt (last updated January 13, 2020)

1

If you've been using Windows for quite some time, you may be familiar with the command prompt and some of the commands you can use there. If you are using Windows 8 or Windows 10, you may not be familiar with a change made to a familiar command: format.

Starting in Windows 8, the format command now allows you to use the /p switch, which causes the command to not only format a drive, but also to perform as many passes on the data surface as you want. Multiple passes decrease the likelihood that someone could successfully retrieve information that used to be on the drive. If you plan on giving the drive to someone else and you previously had information on the drive you don't want them to potentially recover, then using the /p switch is a good idea.

As an example, let's say that you had an external drive (F:) that you want to give to someone else. After you've copied all the information from the drive, you can display the command prompt window (as discussed in other WindowsTips) and then use this command:

format f: /p:5

This command performs 5 formatting passes. While this may take a while to complete, the process makes the probability of anyone accessing old information vanishingly small. (It sure beats the old way I used to make sure nobody could access data on a drive I no longer needed: Hitting it multiple times with a three-pound sledgehammer.)

 This tip (2596) applies to Windows 8 and 10.

Author Bio

Allen Wyatt

With more than 50 non-fiction books and numerous magazine articles to his credit, Allen Wyatt is an internationally recognized author. He is president of Sharon Parq Associates, a computer and publishing services company. ...

MORE FROM ALLEN

Forcing Dates Forward

Want to push a date to some pre-defined day of the month? Here's some ways to force the issue.

Discover More

Refreshing PivotTable Data

If you modify the data on which a PivotTable is based, you'll need to refresh the table so it reflects the modified data. ...

Discover More

Selecting a Graphic Behind a Text Box

How to select a graphic that is obscured by a text box can be perplexing. Here's an overview of the different ways you ...

Discover More
More WindowsTips

Finding a Device Driver's Version

Device drivers are used to allow a hardware device to communicate effectively with Windows. You might need to know a ...

Discover More

Checking for Faulty RAM

Although it's rare for RAM to go bad, it does happen. This tip tells you how to check for faulty RAM by using the Windows ...

Discover More

Connecting to an External Screen

Got a second monitor or projector you want to use with your Windows system? Here's how easy it is to take advantage of ...

Discover More
Comments

If you would like to add an image to your comment (not an avatar, but an image to help in making the point of your comment), include the characters [{fig}] (all 7 characters, in the sequence shown) in your comment text. You’ll be prompted to upload your image when you submit the comment. Maximum image size is 6Mpixels. Images larger than 600px wide or 1000px tall will be reduced. Up to three images may be included in a comment. All images are subject to review. Commenting privileges may be curtailed if inappropriate images are posted.

What is 6 - 6?

2020-01-13 10:21:42

J. Woolley

You might be interested in Disk Wipe: http://www.diskwipe.org/


Newest Tips