Based on Justin C. Sherrill's post on dragonfly.kernel

Hungarian version of this doc here.

1.) install from latest snapshot iso (there will be errors)
2.) rebooted
3.) log in as root
4.) assign root a password
5.) in /etc/rc.conf do sshd_enable="YES", ifconfig_xl0="DHCP"
6.)rebooted
7.) fetch ftp://ftp.FreeBSD.org/...cvsup-without-gui-16.1h.tgz
8.) adduser (for myself)
9.) mkdir /home/dcvs
10.) fetch http://www.dragonflybsd.org/Main/dragonfly-cvs-supfile
11.) mv dragonfly-cvs-supfile /etc
12.) echo "cvs-dfports" >> /etc/dragonfly-cvs-supfile
13.) rm -rf /usr/src /usr/obj
14.) cd /usr
15.) cvsup -g -L 2 /etc/dragonfly-cvs-supfile
(check kernel list to make sure there's no recent tinderbox errors in the
last 3 hours.)
16.) cvs -d /home/dcvs co dfports
17.) cvs -d /home/dcvs co src
18.) cp /usr/share/examples/cvsup/FreeBSD-ports-supfile /etc/
(edit FreeBSD ports-supfile for correct server)
19.) cvsup -g -L 2 /etc/FreeBSD-ports-supfile
20.) make buildworld
21.) make buildkernel
22.) make installkernel
23.) make installworld
24.) mergemaster
25.) reboot