Data Erasing
Referred to as data sanitization, this is often used for large valuable pc's and laptops with extensive storage, the sanitized units will have a reuse and it is a shame to shred to destruction when we can hand them back to be reused time and time again.
Data is deleted
The Data is removed by a standalone operating system not linked by blue-tooth, wireless or ethernet, it is a system driven process which is locked to a specific task - 100% data destruction.