sudo ddrescue -n /dev/zero /dev/sdb zero_log.txt
Sunday, February 27, 2011
Great Zero Challenge
Don't just throw your old hard disks out (especially if they're still inside a laptop, as this only makes it easier for casual analysis) without first wiping them clean. A long time ago, according to Internet folklore, somebody began the Great Zero Challenge: any professional firm to recover data from a disk written full of zeros would win $40. Not a princely sum, but it was never taken up. To protect your own disk, All You Need To Do(tm) is run this command to copy zeros from the /dev/zero device to your HDD that's going in the skip.
Posted by Jono at Sunday, February 27, 2011