[ubuntu] I need a program that will nuke my drive if the correct password is not entered 3 ti

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http://ubuntuforums.org – I'm looking for some type of program (that possibly includes it's own boot loader) that will SECURELY format all of the data on my hard drive if the correct password isn't entered in 3-5 times. I've been asking a bunch of people this and they say that it can't be done because formats aren't secure; my response is this http://www.dban.org/ . I use that iso to erase my hard drive every so often (whenever a new version of ubuntu comes out). I'm running windows 7 on one partition on my hard drive (it's encrypted via truecrypt) and I run ubuntu 10.04 LTS on the other partition. I need something t (Hardware)