I’m going to donate my old desktop computer. To be safe, I wanted to wipe the hard drive. I figured an Ubuntu Live CD would do the trick, and I almost got it to work by guessing the command, but I had mistakenly specified the partition (sda5) instead of the drive itself (sda). It worked like a charm. Here’s how I did it: sudo swapoff -a sudo shred -vfz /dev/sda
Apple redeemed itself with its awesome store in Bellevue. My MacBook’s hard drive went bad, and I took it into the store to see about getting it repaired. It turns out the hard drive model was known to have problems, and was covered under a special warranty. The tech at the Genius Bar replaced it for me for free in about ten minutes, and that was that. Nice.