i have an iBook G3 "snow" / 500 / 650 mb / currently OS X 10.3.9 / brand new 80gb hard drive. Tried the Tiger disk installation. It gave me a Kernel panic. Searched about this and someone mentioned holding Option, Command, Shift and Delete then booting - did that and guess what!? The UPGRADE installation of Tiger commenced!!!!! New problem however: installation process starts, but before it gets to 50% complete it gives me an error and that installation should be restarted. So now I am in a continuous loop. I deselected all printer file installations just to keep it to minimum but no good. Also tried to install it on a partition but didnt work, still get half way through installation. So basically, based on the progress I have made so far, and based on the nature of the errors received. Can anyone come up with a solution or next step to try?