How to Securely Delete Files and Wipe Old Drives
Deleted files can often be recovered. Proper wiping prevents it.
Everyday deletion
Deleting a file usually only removes the pointer to it. The data stays until overwritten.
Before selling or recycling
- Back up what you need.
- Sign out of accounts and remove the device from your cloud account.
- Use the factory reset with encryption enabled so the key is destroyed.
- For hard drives, use a trusted wiping tool; for SSDs, rely on encryption and secure erase.
Physical destruction
For drives with highly sensitive data that cannot be wiped, physical destruction is the safest option.
Key takeaway: Encrypt first, then reset or wipe. Never hand over a device with data still on it.
