Help with script to copy drive with cpio

#!/bin/sh
#
# Original Script written by Constantin Ionescu
# Modified by Carlo Cosolo
# Modified by Peter Baer Galvin
# Modified by John West
#
#
# <<<----- Modified for use of cpio instead of ufsdump/ufsrestore
#
# Use and distribute freely
#
# Define variables for use in the script
#! Important, these must be set correctly !
#

# The root disk to duplicate (leave off slice numbers and path)
SRC=c0t0d0

# The empty disk to duplicate it to (leave off slice numbers and path)
DEST=c0t1d0

# The directory to mount destination partitions on while duplicating
MOUNTDIR=/dup_0

# The file name of this script, to rename it on the destination to avoid execution
SCRIPT=/opt/local/etc/rootcopy

# The slices that should be copied
# where s0 - / and s1 - swap and s3 - /usr
SLICES="s0 s3"

echo ===================================
echo Disk Copy script started `date`
echo

# Make sure the mount point for duplicate partitions exists

if [ ! -d $MOUNTDIR ]; then
mkdir $MOUNTDIR
chmod 700 $MOUNTDIR
fi

# Partition the duplicate disk, make filesystems, make it bootable

prtvtoc /dev/dsk/${SRC}s2 | fmthard -s - /dev/rdsk/${DEST}s2

# Less elegant, but working version of line above
#
# prtvtoc /dev/rdsk/${SRC}s2 > /tmp/vtoc
# fmthard -s /tmp/vtoc /dev/rdsk/${DEST}s2

installboot /usr/platform/`uname -i`/lib/fs/ufs/bootblk /dev/rdsk/${DEST}s0

# Modify the following loop to handle any special cases

for fs in $SLICES
do
	newfs /dev/dsk/${DEST}${fs} < /dev/null; mount /dev/dsk/${DEST}${fs} ${MOUNTDIR};
	find /dev/dsk/${SRC}${fs} -mount -print | cpio -pdmuV ${MOUNTDIR};
	if [ $fs = "s0" ]; then
		sed 's/${SRC}/${DEST}/g' /etc/vfstab > ${MOUNTDIR}/etc/vfstab;
		mv ${MOUNTDIR}/${SCRIPT} ${MOUNTDIR}/${SCRIPT}.DONTRUN;
	fi
umount ${MOUNTDIR}
done

echo 
echo Disk Copy script ended `date`
echo =====================================
echo