You are working as a technician at Certkiller .com. Your boss has received a new laptop and asks
you to ensure that all existing data is permanently removed from the old computers hard drive.
What would you do in order to meet his request?

A.
Re-install the operating system over itself.

B.
Perform a format.

C.
Perform a low level format.

D.
Delete the files and folders manually.

Explanation:
User instigated low-level formatting (LLF) of hard disks was common in the 1980s. Typically this
involved setting up the MFM (Modified Frequency Modulation) pattern on the disk, so that sectors
of bytes could be successfully written to it. With the advent of RLL(Run Length Limited) encoding,
low-level formatting grew increasingly uncommon, and most modern hard disks are embedded
systems, which are low-level formatted at the factory with the physical geometry dimensions and
thus not subject to user intervention.