I have also written a small blog about it here if you want a bit more detail, otherwise i can explain the process in more detail if you'd prefer.
http://thebookyard.wordpress.com/2013/01/24/the-aluminium-imac-ranges-and-their-hard-drives-2011-hd-problem-resolved/
== Update ==
I have written a small blog about it here if you want a bit more detail, otherwise i can explain the process in more detail if you'd prefer.
(i have also resolved the 2011 iMac hard drive upgrading process, which was a much more complicated problem)
http://thebookyard.wordpress.com/2013/01/24/the-aluminium-imac-ranges-and-their-hard-drives-2011-hd-problem-resolved/
I have also written a small blog about it here if you want a bit more detail, otherwise i can explain the process in more detail if you'd prefer.
http://thebookyard.wordpress.com/2013/01/24/the-aluminium-imac-ranges-and-their-hard-drives-2011-hd-problem-resolved/