file just loaded does not appear to be executable

Hi

When i m trying the boot the system with Primary HDD (c1t0d0s0) -- its solaris 10

I m getting an error "file just loaded does not appear to be executable".....So will anyone share the steps to recover from this stage

I also tried to build the corrupted superblock from below command but no luck !!
installboot/usr/platform/'uname -i'/lib/fs/ufs/bootblk/dev/rdsk/c1t0d0s0