diskutil list not responding
My 2009 27" iMac has recently stopped working. When I boot up it runs normally for few minutes and then everything freezes up and I get the beachball. I can move the cursor and drag windows around the desktop but I can't actually click on anything. I have to do a hard shutdown.
I can't boot into SafeMode, when I try holding Command + Shift on boot it just shuts down again. I also can't boot up into recovery mode because it does the same thing as when I just boot it normally.
I don't have a back up, so I'm currently trying desperately to find a way to back up at least my user folder onto an external drive so I can wipe the computer clean and start fresh.
I just came across the diskutil command in terminal. So I booted up into Single User Mode and typed in 'diskutil list' to find the drives I needed so I could mount them and copy and all that, but it came back with "Killed: 9" instead of any sort of list. I'm going from root#, so it looks like:
:/root# diskutil list
Killed: 9
What does this mean? Could I be doing something wrong? Does anyone have any other solutions I could try?
Mac OS X (10.6.7)