hammer: Missing volume (No header)

["Diegu" <peur.neu@xxxxxxxxx>]

Had a crash as usual using xorg i915 driver while switching to text console.
i915 xorg driver works fantastic. console crashes.
after the crash this is the result on a fresh system.

foo# mount_hammer -o ro /dev/ad2s1b /media/R1
hammer_mount: Missing volume, cannot mount /dev/ad2s1b
(No header)

using.
foo# uname -a
DragonFlyBSD 2.8.2 (i386)

using DF 2.8.2 (x86_64) seems not to happen.

the other hammer functions on x64 work flawless on a full 100Gb drive.