Assuming that you have a working FreeBSD DHCP/NFS server on 192.168.1.10 already configured and that your network is 192.168.1.0/255.255.255.0

I also assume that you can access the serial console of the machine to be netbooted from the host via tip(1), conserver-com, etc.

• DHCP configuration

host testbox {
     fixed-address 192.168.1.101;
     hardware ethernet 00:16:3e:00:00:04;
     next-server 192.168.1.10;
     filename "pxeboot.9";
     option root-path "192.168.1.10:/pxeroot/9.0-RELEASE/";
}

• PXE/TFTP inetd.conf
  • copy /boot/pxeboot from the ISO to /tftpboot/pxeboot.9

tftp    dgram   udp     wait    root    /usr/libexec/tftpd      tftpd -l -s /tftpboot

• NFS Dir
  • mkdir /pxeroot/9.0-RELEASE
  • mdconfig -f [9.0 DVD ISO]
  • mkdir /tmp/iso
  • mount -t cd9660 /dev/md0 /tmp/iso
  • cp -r /tmp/iso/* /pxeroot/9.0-RELEASE
  • umount /tmp/iso
  • mdconfig -d -u 0
  • cd /pxeroot/9.0-RELEASE
  • Edit for serial console in netboot environment
    • /pxeroot/9.0-RELEASE/boot.config
      • -Dh
    • /pxeroot/9.0-RELEASE/boot/loader.conf
      • console=“comconsole”
    • /pxeroot/9.0-RELEASE/etc/ttys
      • change ttyu0 entry to

ttyu0   "/usr/libexec/getty std.9600"   vt100   on secure

• /etc/fstab

#/dev/iso9660/FREEBSD_INSTALL / cd9660 ro 0 0
192.168.1.10:/pxeroot/9.0-RELEASE/ / nfs ro 0 0

• NFS server /etc/exports
  • /pxeroot/9.0-RELEASE -alldirs -maproot=0 -network 192.168.1.0 -mask 255.255.255.0
  • restart nfs server /etc/rc.d/nfsserver restart

• Access the console of the host to be installed via netboot(tip, conserver, minicom, etc…)
• Power the host on and verify that the host pxeboot's into the installer and follow the instructions from there.
• Change the entry in your dhcpd.conf to something like the following:

host testbox {
     fixed-address 192.168.1.101;
     hardware ethernet 00:16:3e:00:00:04;
     #next-server 192.168.1.10;
     #filename "pxeboot.9";
     #option root-path "192.168.1.10:/pxeroot/9.0-RELEASE/";
}

• Before rebooting after the install is complete, you must setup your serial console manually at this time
• At the last menu, drop to a chroot'd shell on the freshly installed system
  • /etc/ttys
    • change ttyu0 entry to

ttyu0   "/usr/libexec/getty std.9600"   vt100   on secure

• /boot.config
  • -Dh
• /boot/loader.conf
  • console=“comconsole”