System: How to boot an old kernel
(last edit: 2000-11-22)
                   If you want to boot with an old kernel, because the current one is not working properly or
not working at all, this is how to: 

During boot you get an message like: "Booting kernel in x seconds or perss enter..." Just 
hit any key except the ENTER key. You will get a kind of a prompt. Type help to find out 
what commands there are. 

Type 'unload all' and then 'boot [kernel file]' where [kernel file] is the kernel you want
to boot e.g. 'kernel.old' . Your freeBSD machine will be booted with the kernel you 
specified.