User:Seefutloong/sandbox

Eraser Software

Eraser software is a type of software that is used to permanently delete a file on a hard disk by wiping it, rewriting over the file, numerous times. Whenever a person saves a file on a hard disk, the file and its resources has been saved onto the hard disk. When a user decides to delete a file, only the reference is deleted but the data is still recoverable. The reason behind it is that when a file reference is removed the computer cannot access the data anymore so that if another file were to save onto the hard drive, the new file can overwrite the space of the old file. Since the "deleted" file is still stored on the hard disk, a data recovering program can be used to make the deleted data resurface by rebuilding the file header so that the computer can see the file again.

Purpose of Hard Disk Erasing Software
The purpose of eraser software is to have the program completely remove all traces of the file that is to be deleted. To do that, the eraser software will delete the file reference of the data and then rewrite the hard disk by running the hard disk through several passes. The passes are the program saving and deleting a mock file over the original file to remove all traces of the original data from the hard disk. The more passes the hard disk goes through, the less chances of the original file being recovered.

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