Follow these instructions at your own risk. They work perfectly on my RaQ4, but I can't guarantee they'll work on your Cobalt. I cannot be held responsible for your machine.
I don't always check this page for comments, so please, leave your comments & then contact me using my contact page so I know to come by & respond. You should also check on my updates before starting, this is where I note new versions of my patches & whatnot.
These instructions assume that you've already upgraded your ROM to at least 2.10.3 from the Cobalt ROM Sourceforge Project. I'm using cobalt-2.10.3-ext3-1M. It's probably a good idea to have an NFS boot server handy or be able to set one up pretty quick. Installing Debian 3.1 Sarge on a Cobalt RaQ4 shows you how to set that up. If something isn't right with the kernel & it doesn't boot, you'll want to be able to boot from the network to fix any issues.