A low level format fills the drive with zeros or effs or both or anything u like (in some 3rd party examples) - point being here u will have no filesystem. This is in preparation for a filesystem to be formatted into place. A hard drive only ever `needs` 1 low level format in it`s lifetime. However if u want to vamouse any expectations of any1 back tracing tables to recover u`r programs (which is more than a long process in itself), u can do it and there is litterally nothing to retrieve, u`r drive is a blank canvas. U can also perform a low level format if u believe u`r drive is kaput and all the drive testing software out there is telling u it`s ok. If a low level fails, u`r drive is definately effed.
A quick format will wipe the bam, the table still exists, just isn`t in order.
One of the simplest commands u can write in machine language is to low level a device. Therein u can put ur name in the values being written
The quickest way to securely readicate any1 reading stuff of u`r drive, apart from the fbi and more importantly the bedroom geek (who`d probably be quicker at it), is to clear all the tables. U got more chance of winning the lottery than extracting files then. Doing and understanding this process explains to u why filling u`r drive with zeros, or whatever, is just a waste of u`r time. As an example, take a spare 120g drive and low level it. Go to bed, wake up and it maywell still be going.
No it isn't. Zero fill is when all the sectors are filled with zeros. A low level format re-defines all the sectors on the drive.
A lot of modern utilities are called "Low Level Format", they do work at a lower level, but do stuff like zero fill than an actual low level format, as doing so would probably break a lot of modern drives.