unable to boot afer restoring root partion manages by veritas

Hi all,

After restoring the / FS on a netra 240. It is unable to boot the system.
The message displayed is the following:
"The file just loaded does not appear to be executable"

Bellow, the content of /etc/vfstab before restoring:

#more /etc/vfstab
-------------------------------------------------------------------------
#device         device          mount           FS      fsck    mount   mount
#to mount       to fsck         point           type    pass    at boot options
#
fd      -       /dev/fd fd      -       no      -
/proc   -       /proc   proc    -       no      -
/dev/vx/dsk/bootdg/swapvol      -       -       swap    -       no      nologgin
g
/dev/vx/dsk/bootdg/rootvol      /dev/vx/rdsk/bootdg/rootvol     /       ufs
1       no      nologging
/dev/vx/dsk/bootdg/usr  /dev/vx/rdsk/bootdg/usr /usr    ufs     1       no
nologging
/dev/vx/dsk/bootdg/var  /dev/vx/rdsk/bootdg/var /var    ufs     1       no
nologging
/dev/vx/dsk/bootdg/opt  /dev/vx/rdsk/bootdg/opt /opt    ufs     2       yes
nologging
/devices        -       /devices        devfs   -       no      -
ctfs    -       /system/contract        ctfs    -       no      -
objfs   -       /system/object  objfs   -       no      -
swap    -       /tmp    tmpfs   -       yes     -
#NOTE: volume rootvol () encapsulated partition c1t0d0s0
#NOTE: volume swapvol () encapsulated partition c1t0d0s1
#NOTE: volume var () encapsulated partition c1t0d0s4
#NOTE: volume usr () encapsulated partition c1t0d0s5
#NOTE: volume opt () encapsulated partition c1t0d0s7 

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Notice: I tried many procedure like installing "bootblk", deleting boot-archive and recreating it, ...

Please help me ASAP.