Hard Disk Format Prolbem

[tinypoodle]

Point well taken, idiotsafe version couldn't harm much.

BTW, just a thought, there is a relation between 'sudo rm -rf /' and  'sudo cat /dev/zero > /dev/XdX'  

In case of any accidental deletion, having zeroed out partition earlier might reduce damage a lot by increasing chances of undelete.   (I have even occasionally written a zero file to unused space of a partition, just to remove it after it wrote zeroes to all unused space)