What are the Negative effects of formatting a hard drive?

The effect of formating a harddisk with the Windows operating system is reprogramming the harddrive into the NTFS file system. This system basiaclly assigns sections of the harddrive to save data most efficiently. The quick form of the format simply erases all the data. In BOTH cases all data will be lost and will never be recoverable for the lifetime of the harddrive.