init: can't exec getty after power failure

[Valentin Bud]

Hello list,

I have FreeBSD 7.0-p5 installed on 2 USB drives mirroring with gmirror. I
use
the following partition scheme:
/ - on USB
/var, /usr, /tmp, /home - on internal HDD using ZFS.

 Last night after a power failure the system failed to boot with the
following error:
... can't find /boot/loader.4th. Entered BIOS and changed the first boot
drive to be
the second USB from raid. The system boots but it stops here:

"Trying to mount root from ufs:/dev/mirror/gm0s1a
Loading configuration file
/libexec/ld-elf.so.1: /lib/libutil.so.7: object is not dynamically linked
init: can't exec getty '/usr/libexec' getty for port /dev/ttyv7: No such
file or directory"

ttyv[n] in fact where 'n' takes values from 0 - 7.

Booted into single user mode, fsck-ed the root partition and tried to mount
all the UFS
partitions (/var, /usr) from the USB drive but the mount command fails with
the
"/libexec/ld-elf.so.1: /lib/libutil.so.7: object is not dynamically linked"
error.

Is there anything i can do next besides reinstallation?

thank you very much and a great day,
v