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How to completely erase any device

Maybe you're super-paranoid, or maybe you just want to sell your old device and have piece of mind. Either way, being able to delete data is a valuable skill. Here's everything you need to know about securely wiping hard drives (HDDs), solid state drives (SSDs), flash drives, and even iOS and Android devices.

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Topic: Storage
StarTech 4-bay drive eraser
1 of 11 Adrian Kingsley-Hughes/ZDNet

StarTech 4-bay drive eraser

If you have a lot of drives to erase, you need a professional piece of kit that can keep up with the demands that you're going to place on it.

This hard drive eraser provides standalone, simultaneous drive erasing for up to four 2.5-inch or 3.5-inch SATA hard drives or solid-state drives.

Unlike hard-drive docking stations or adapters that require a computer connection and software to erase drives, this hard drive sanitizer features standalone erasing that doesn't require a host computer. This avoids the hassle of connecting your drives to a host computer and protects your drives from external security threats like remote data access.

The four-bay design maximizes efficiency by batching multiple drives in single erase projects, saving you valuable time. The hard drive eraser supports USB 3.0, also known as USB 3.1 Gen 1, with file transfer rates of up to 5Gbps.

Price: $815 | More information

Free way to erase iOS and Android devices
2 of 11 Adrian Kingsley-Hughes/ZDNet

Free way to erase iOS and Android devices

iOS and Android devices both have built-in tools to erase the devices.

  • On iOS: Settings > General > Reset and then tap Erase All Content and Settings.
  • On Android: Settings > Backup & reset > Factory data reset and then tap Reset phone or Reset device.

You can also securely wipe the devices remotely using Find My iPhone for iOS or the Google Account associated with the Android device.

Price: Free

PARTED Magic
3 of 11 Adrian Kingsley-Hughes/ZDNet

PARTED Magic

Another way to do this is to use a software tool called PARTED Magic.

While PARTED Magic is not free (price starts at a reasonable $11), it is a very effective tool, and one of the best I've used for wiping SSDs, as well as the depth of information it offers.

This tool also does a lot more than data erasure:

  • Data cloning
  • Benchmarking
  • Disk partitioning
  • Data rescue
  • System stability tester

Price: $11

DBAN - Darik's Boot and Nuke
4 of 11 Adrian Kingsley-Hughes/ZDNet

DBAN - Darik's Boot and Nuke

This is the default tool that most people who have the odd drive to erase turn to. I've used this tool to wipe thousands of drives and found it to be both thorough and very effective.

While DBAN is an awesome tool, it's important to understand its limitations. Here is what the new owners of DBAN, Blancco Technology, have to say:

"While DBAN is free to use, there's no guarantee of data removal. It cannot detect or erase SSDs and does not provide a certificate of data removal for auditing purposes or regulatory compliance. Hardware support (e.g. no RAID dismantling), customer support and software updates are not available using DBAN. Should you need to erase data from a SSD or require a certificate of data removal, request a free trial of Blancco Drive Eraser."

Price: Free | More info/download

Blancco Drive Eraser
5 of 11 Adrian Kingsley-Hughes/ZDNet

Blancco Drive Eraser

This is the go-to tool for professional, certified, drive erasure.

Guarantee your data has been erased from any drives, including complex SSDs in desktop/laptop computers, servers and storage environments with the most certified and patented data erasure solution.

Includes advanced features such as:

  • Patented solid state drive (SSD) erasure (Patent No. 9286231).
  • Erases data permanently from multiple HDDs/SSDs simultaneously
  • Automates the hard drive wiping process to remove system BIOS free locks
  • Local and remote deployment
  • RAID dismantling and pass through
  • Identifies false positives during internal data erasure processes
  • Provides digitally signed certificate of proof of secure erasure for auditing
  • Compliant with state, federal and international data privacy regulations and guidelines, including ISO 27001 and ISO 27040

Price: $18.46 per erasure | More info/download

Blancco Mobile Device Eraser
6 of 11 Adrian Kingsley-Hughes/ZDNet

Blancco Mobile Device Eraser

Blancco mobile and phone wiping software allows organizations, mobile service providers and resellers to permanently erase all data from smartphones and tablets running on iOS, Android, Windows Phone and BlackBerry operating systems.

  • Securely wipes iOS, Android, Windows Phone and BlackBerry operating systems
  • Quickly erases data on up to 50 mobile devices simultaneously
  • Automatically selects the fastest and most effective data erasure method
  • Provides digitally signed certificate of proof of data erasure for audit trail purposes
  • Compliant with state, federal and international data privacy regulations and guidelines, including ISO 27001 and ISO 27040

Price: $13.52 per erasure | More info/download

Wiebetech's Drive eRazer Ultra
7 of 11 Adrian Kingsley-Hughes/ZDNet

Wiebetech's Drive eRazer Ultra

The WiebeTech Drive eRazer Ultra is a stand-alone device that completely and quickly cleans hard drives. Simply connect a drive to the Drive eRazer Ultra and it will sanitize the drive faster than using software, and without tying up your computer.

The Drive eRazer Ultra leaves the drive ready for safe re-use, and comes with a dozen different preset erase procedures, including US Department of Defense graded methods for data wiping.

Additional features:

  • Simple setup and operation with LCD and menu buttons
  • USB port for drive previewing and deletion confirmation
  • Serial label printer connector
  • Rugged aluminum construction
  • 3-year warranty
  • Free US-based customer support

Price: $249 | More info/download

ProtectStar Data Shredder
8 of 11 Adrian Kingsley-Hughes/ZDNet

ProtectStar Data Shredder

I like ProtectStar Data Shredder software because it works across the board -- Windows, Mac, iOS, Android, even Apple TV.

This tool meets and exceeds government, military and industry standards for the permanent erasure of digital information and erases all existing data up to top-secret security level data.

Price: Depends on version and platform

Encrypt the whole drive
9 of 11 Adrian Kingsley-Hughes/ZDNet

Encrypt the whole drive

One of the easiest -- and certainly the cheapest -- ways to erase data on a device is to encrypt the entire drive with a complex passphrase. You can use built-in tools such as BitLocker on Windows or FileVault on macOS, or a third-party tool such as or third-party VeraCrypt. Encrypt the drive with a strong throw-away passphrase and you're done.

No passphrase, no data.

You can then format the drive, from which point it should be sterile and ready to accept a reload of the data.

Price: Free

Erase using manufacturer utilities
10 of 11 Adrian Kingsley-Hughes/ZDNet

Erase using manufacturer utilities

Another way to erase SSDs is to use the manufacturer utilities. Here are some links to get you started.

Price: Free

The hands-on method
11 of 11 Adrian Kingsley-Hughes/ZDNet

The hands-on method

Not sure how to erase a device? I guarantee you that if you get a big enough hammer and spend enough time hammering, this will work on anything!

This method also works great if you just want to destroy drives before you take them to the recycling plant. It's also a great stress reducer!

You will need:

  • A hammer (I use my trusty 32oz "fine adjustment" hammer)
  • A thick nail (a 6-inch nail will do fine)
  • Thick gloves - because you're going to be hammering that nail through the drive using the hammer, and hammers seem to be magnetically attracted to thumbs
  • A block of wood -- so you don't nail the drive through your floor (it's preferable to do this outside if you can)
  • Eye protection -- you've only got a maximum of two to start with, so it's silly to take chances!

Now you apply brute force. Ideally you want to put a nail through the platters of the drive, going all the way through (it's actually not as hard as it sounds). I aim for the spot marked by the red X on hard drives.

Alternatively you can use a power drill to make holes, but make sure that you have a way to securely hold the drive, for example, using a vice. Don't hold the drive in your hand because if the drill bit catches and the drive starts to spin -- or helicopters -- then there's a real risk of injury.

Another thing to bear in mind is that the data in SSDs is held on small flash storage chips rather than large platters, and to securely erase the data you need to smash the chips. Usually, this means taking the cover off the drive before you start swinging.

If you're not sure which are the flash storage chips, just drive a nail through all the large chips to be on the safe side.

Price: Free

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