Urgent! Can not load the kernel

[Ahfei Ho]

Dear Sir,   We have installed the Freebsd4.32 in our server.But we can not reboot the system after we tried upgraded our system failed.Now,we can boot the system that shown not kernel found.   We have not any flopy for fixit.What shoul we do?   We would not re-install the system since there are some available data.Please give us an instruction how to revise it.   Thanks.   Best regards.   We do need your kindly help!! Ahfei  Ho