Rescently I had recently installed some apple updates and the next day my Macbook was having issues with booting. Currently it boots to an all grey screen with a folder and a ? inside the folder. I took it to the Mac store and the guy only looked at my computer for 2 minutes and told me I had a bad HD. I decided to try and get my friends macbook and attempted to load my HD on his mac via firewire and target disk mode. When I tried this my HD did not show up on his desktop as I thought it would. Im assuming that I have a bad HD now. The real question is how I might recover the data from that HD. I have read up on the program "diskwarrior" but am unsure how its going to work. I mean how am I going to recover my HD using a program when I cant even get my mac to boot. Please assist if you can, thanks.