-snip-
He is right, there are tools where you can read the drive with a magnetic device, so even a full format and 5 formats, still the data can be read with special hardware
/Bartek
Those tools are useless for hard drives with its "
Master Boot Record" all zeroed, ETFbitcoin described his term "
full format" like "
Zero Fill", so he really meant zero fill.
It's also known as "
Low level formatting".