Deleting or formatting does not permanently erase a hard drive — freely available tools can recover the data. The two safe options are NIST 800-88 secure wiping when the device will be reused, or physical destruction when the data is highly sensitive or the device is damaged, backed by a certificate from a licensed recycler.
Why formatting is not enough
Deleting and quick formatting only remove the file index; the data stays on the disk until overwritten, and recovery tools can restore it.
Secure wiping or physical destruction?
| Secure wiping | Physical destruction | |
|---|---|---|
| How it works | Overwrites all data to NIST 800-88 | Destroys the storage medium |
| Device still usable? | Yes | No |
| Best for | Devices to be resold or refurbished | Highly sensitive data and damaged devices |
| Proof | Destruction certificate | Destruction certificate |
What about SSDs?
SSDs store data differently, so ordinary overwriting does not guarantee every cell is cleared. Drive-specific sanitize commands per the standard, or physical destruction for sensitive data, are used instead.
For companies
A company needs documented proof, not just a wipe. Triple RE offers secure wiping and physical destruction, on-site or at the plant, with a destruction certificate within 14 days. Data destruction certificate.
Frequently Asked Questions
Can data be recovered after formatting?
In most cases yes, especially after a quick format.
Is smashing a drive with a hammer enough?
It can leave platter fragments intact. Professional physical destruction with a certificate is the documented route for companies.
Can a drive be sold after secure wiping?
Yes. NIST 800-88 wiping allows the device to be reused or resold.
Related
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