Wei Hu wrote:
I'm planning to replace my older disk (13G) with a larger/newer hard disk (750G) and to maintain the machine as it is. what I want are replace the old disk with the new disk including the Debian (2.6.16) operating system and keep all the setups. [ ... ]
http://newbiedoc.berlios.de/wiki/Cloning_a_hard_disc may be what you want. Hth, Chris.