2.6 upgrade: no root partition

[Jan Lentfer]

Gergo Szakal schrieb:
Some additional information: I burned a 2.6 is and booting from that, I
can access the partitions. So I smell a configuration issue on my end
but have no idea where the problem can be.
ok, then paste the /boot/loader.conf from the system here and also the 
dmesg from when you boot from CD.

Does the disk still probe with the same device name? are you mounting 
using serno?