How do I re-install Ubuntu 8.10? I installed it, played around with it, put some things on and took some things off and generally messed it up. I want to start over with a clean install without messing up my home directory (which, fortunately, is on a separate partition).
When I put in the installation disk, it seems to recognize that it is already on the hard drive and boots up from that. This is not what I want. I want it to start over and install it cleanly. I want my messed up but working install on the hard drive to be a forgotten memory.
How do I do this?