Which is one of the best methods to destroy data from the disk without physically damaging it?

• You can destroy a hard drive by wiping its contents and disassembling its parts for ultimate security.
• If you're donating, selling, or recycling a computer, you'll want to make absolutely sure you're not giving away the personal and private information on your hard drive.
• Here's how to disassemble and destroy your hard drive with just a few common tools. 

When you're selling, donating, or recycling a computer, it's critical that you ensure you're not accidentally giving someone else access to your personal and private data stored on the computer. One way to do that is to thoroughly wipe [not simply erase] your old hard drive — for details on how to do that, see our article on fully wiping your computer's hard drive. 

You can go further, though. For the ultimate personal security, you can remove the hard drive from your computer before you give it away and destroy the drive. That's not as hard as it sounds, and ensures your old data is completely inaccessible to anyone ever again. 

The tools you'll need to remove and destroy a hard drive

You don't need much to disassemble and ruin a hard drive:

• A Torx screwdriver to open the case
• A flathead screwdriver to pry open the case

How to find and remove the hard drive from your computer

Start by removing the hard drive from your PC. If you have a desktop or tower PC, unplug it and remove the cover or side panel [some cases are toolless and you only need to loosen some restraints, while others might require a screwdriver to remove screws]. 

Look for the hard drive, which will be inserted in a drive bay or screwed to the side of the chassis. In most cases, you can simply disconnect the power and data cables and slide the drive out of the computer, but it might be screwed in place, in which case you'll need to use a Philips head screwdriver to get it out of the PC.

If you have a laptop, you might need to refer to your user guide or contact the laptop's customer support for information on how to remove the hard drive – the access panel might be on the bottom of the case or you might need to remove the keyboard to reach the hard drive.  

How to destroy a hard drive the fast way

If you're in a hurry, you can damage it in a way that only a dedicated hacker will be able to recover any data.

1. Flip the hard drive over so you can see the main circuit board. 

2. Use a Torx driver to unscrew the circuit board using the four Torx screws.

3. Remove the board, break it in half, and discard it. 

4. Now you can recycle the hard drive knowing that someone can't simply connect the drive to another PC to read its data, so it's safe from casual users. 

How to destroy a hard drive the thorough way

If you are going to take the time to get your Torx driver and remove the circuit board, you might as well be thorough, since it only takes another five minutes to completely destroy the drive. 

1. Remove the Torx screws around the outside edge of the top plate on the hard drive case.

2. There will usually be one additional "hidden" Torx screw under the paper label. Feel around with your finger for a depression and then use a flathead screwdriver to tear the label away. Then use the Torx driver to remove the final screw. 

3. Pull the top plate off. You'll probably need to pry it off with the flathead screwdriver. If it's extremely hard to remove, make sure there isn't an additional screw holding it together. 

4. Now you can see the hard drive platters – there might be several of them stacked atop one another, each with its own read/write head which looks sort of like a phonograph's tone arm.  

5. Continue to disassemble the internal components by removing the tone arm and the platters themselves. There will probably be about three Torx screws on the spindle holding the platters in place.

6. At this point, the very act of exposing the platters to air and handling them with unprotected fingers has almost certainly destroyed the data on the drive. To be thorough, use a flathead screwdriver to scratch the surface of each platter. Now anyone would be hard-pressed to recover anything of value from this drive.

Related coverage from Tech Reference:

• SSD vs. HDD: How to decide which storage option is the best for your computer
  

• How to clone a hard drive as a backup for your Windows computer

• What is an external hard drive? One of the best ways to protect your important files, explained

• How to partition a hard drive in Windows 10, and keep your most important files separate from the rest

• How to wipe a computer if you want to sell it or give it a fresh start

Dave Johnson

Freelance Writer

Dave Johnson is a technology journalist who writes about consumer tech and how the industry is transforming the speculative world of science fiction into modern-day real life. Dave grew up in New Jersey before entering the Air Force to operate satellites, teach space operations, and do space launch planning. He then spent eight years as a content lead on the Windows team at Microsoft. As a photographer, Dave has photographed wolves in their natural environment; he's also a scuba instructor and co-host of several podcasts. Dave is the author of more than two dozen books and has contributed to many sites and publications including CNET, Forbes, PC World, How To Geek, and Insider.

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