I have just put a new HD into my late 2006 iMac 2111. It was a Wster Digital Green 1TB drive - I was told that it would be compatible. I used ifixit to change it - wasn't difficult and went really smoothly. Now I'm trying to format the new drive. If I use start up manager and select the cd (original disc I installation disk - Tiger) it chews a toffee and then has a kernel panic. Can anyone tell me what I have done wrong?