I know roughly that when sending a file to the Recycle bin and then emptying the trash won't delete the information on a drive. It will infact mark that area on the drive where that file was as usable again and can be written over, but can still maintain its charge electrical state on the drive in of course its basic form of binary electrically charged state, thus making it recoverable to specialists that can perform data recovery. But, will, FORMATTING a drive reset a drive altogether and reset the electrical charge on the drive making it impossible for data to be recovered?
I recently watched Vsauce's 'Where do deleted files go?' in which he spoke of this topic but I this wasn't something he discussed. He mentioned that, if you wanted to erase all of the information on a drive you'd have to re-write over that information across the entire drive to effectively 'reset' the drives information, but, once you erase all that information, Isn't that then sat on the drive but also stored as a form of binary electrically charged state, but marked as free space?
here's the video i'm refferencing: https://www.youtube.com/watch?v=G5s4-Kak49o