I recently installed Ubuntu Desktop on an older machine, and the performance isn't what I'd like. I'd like to switch it over to Server (server kernel, drop the GUI, etc) with minimal hassle. What's the simplest way for me to do this, preferably without re-installing from CD?
It can be done with either one of these
And there are probably even more methods. Re-installing, without formatting if you want to preserve settings, is most likely less time consuming though.
If you want to change the kernel you need to install these files:
where 2.6.38-10 is the kernel version (change it to the one you are installing). And to remove the desktop kernel:
Change 2.6.38-10 to the one you are using.