@RoundtheCorner
I need to tell you that Erasing the files does not physically remove them. Anyone with a halfway decent data recovery app could run that and recover most, if not all, of the files. So, if you are concerned about removing sensitive information, like account info or passwords, from the drive, erasing is not sufficient.
Read this thread I wrote about this issue for more details: https://h30434.www3.hp.com/t5/Notebooks-Knowledge-Base/Preparing-a-used-HP-notebook-for-resale/ta-p/...
I am a volunteer and I do not work for, nor represent, HP