east-tec Eraser is a privacy protection software that helps you protect your personal data and your offline and online privacy by helping you erase all files that store evidence of your computer and Internet activities.
File Erasure Securely erase sensitive files beyond recovery with our advanced file eraser tool.
Secure Erase (SE) uses the ATA standard command SECURITY ERASE UNIT to overwrite data stored on the media. This firmware-based erasure method is often optimized for the device architecture like ATA or NVMe.

As we can see from the illustration, Secure Erase Online Files Method has many fascinating aspects to explore.
Secure Erase - Powerful, easy to use, and inexpensive. (partedmagic.com).
I know you need a secure way to delete files. You have the option of using BitLocker to encrypt your entire hard disk. When you enable BitLocker, all data on your hard disk will be encrypted, including newly created, stored, modified or deleted files.

Methods to Erase Files from a Hard Drive. Method 1: Manual Erasure. Simple Deletion. The most basic method of file removal is simply deleting files and emptying the Recycle Bin (Windows) or Trash (macOS).