invalid partition

[Margaret Nielsen]

I an trying to install 4.10 on an old Pentium with 2 small hdd. There was no operating system loaded so I don't know much about the box and not sure how to get any.  No problem with the kernel config.  Made just one partition.  Accepted the default labelling.  Selected option to use FreeBSD bootloader.  

on reboot get:

invalid partition
invalid partition
no /boot/loader

>>FreeBSD/i386/ Boot
Default: 1:ad(1,a)/kernel
Boot:


What I'm I doing wrong?   Where can I find some help?