How to configure FreeBSD for rebooting when kernel panic

[Andrey V. Elsukov]

Kris Kennaway wrote:
> That should be the default condition as long as you don't specify
> debugger support (or do and use DDB_UNATTENDED)
Thanks.
I have RELENG_5 server with ATA RAID promise controller and 4 ATA disks 
in two RAID0 stripes.
Today one RAID0 has BROKEN (ar0). I have tried "umount -f /dev/ar0s1d" 
and currently have unreacheble system.. (i have only remote access to 
this machine) :(
How to umount broken raid without system hold?
-- 
WBR, Andrey V. Elsukov