Вот последовательность действий:
1. pkg_add ftp://ftp.freebsd.org/pub/FreeBSD/CVSup/cvsupit.tgz
2. Say yes to everything except to do the Update and the firewall, ports
as you wish...
3. vi /etc/cvsupfile
4. change RELENG_2_2 to RELENG_2_2_6_RELEASE
5. cvsup -L 2 -g /etc/cvsupfile
6. cd /usr/src
7. make world (do not reboot afterwards, this takes a long time).
8. backup /etc/ (cd /etc; tar cvf /tempdir/etcback.tar)
9. cd /usr/src/sys/i386/conf
10. cp GENERIC MYKERNEL (your kernel)
11. vi MYKERNEL (edit as desired)
12. config MYKERNEL
13. cd ../../compile/MYKERNEL
14. make depend; make; make install
15. cd /usr/obj/etc (not sure on this one, pulling from memory)
16. rm master.passwd, group, rc.conf (look at this one and merge where
necessary), and whichever other files you have modified.
17. copy to /etc the rest (with subdirectories).
18. vi /etc/fstab
19. change wd0a to wd0s1a
20. reboot the beast
