Securely Wiping HDD
I heard from many security consultants that the best way to ‘destroy’ a HDD data other than drilling a hole into the centre of the HDD is to
1. Encrypt the entire HDD with a random key string
2. Wiping it with DoD standard
I have written this python script which automates the process.
You can find the script at http://pastebin.com/fa324359
What I have done is to put this script in ubuntu and then use remastersys to create a bootable ISO.
This way, you can burn the ISO and pop the disc to any computers to wipe out the data.