Can't boot after make installworld

Krzysztof Dajka alteriks at
Sun Mar 21 19:15:31 UTC 2010

Hi, I'm having problem with upgrading my FreeBSD to RELENG_8.  Building
world and kernel went smoothly I can boot with new kernel, but after 'make
installworld' I could boot my system. My system prints only:
BTX loader 1.00 BTX version is 1.01
Console: internal video/keyboard
BIOS drive C: is disk0
BIOS drive D: is disk1
BIOS drive E: is disk2
BIOS drive F: is disk3
And freezes...

Here is my configuration:
[~] # cat /etc/src.conf
[~] # cat /etc/make.conf
# added by use.perl 2010-03-10 21:03:54

What have I done:
rm -rf /usr/obj
make buildworld
make buildkernel
make  installkernel
nextboot -o '-s' -k kernel
shutdown -r now

Reboot went fine:
[~] # uname -a
FreeBSD altstation 8.0-STABLE FreeBSD 8.0-STABLE #0: Sun Mar 21 09:57:11 UTC
2010 toor at altstation:/usr/obj/usr/src/sys/GENERIC amd64
zfs mount -a
zfs set readonly=off zroot
adjkerntz -i
mergemaster -p
cd /usr/src
make installworld
shutdown -r now

Unfortunately my system hangs while booting and I had to rollback to
snapshot before 'make installworld' Actually I'm using new kernel build
today and 'world' from install dvd. It's my first FreeBSD upgrade, am I
missing something?

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