#!/bin/bash

usage="Usage: $0 DEVICE FILE
Try \`$0 --help' for more information."

help="Usage: $0 DEVICE FILE

Make an image of the disk drive DEVICE on file FILE.  The disk drive
is assumed to have exactly one NTFS partition defined on it.

Example:
$0 /dev/sda /mnt0/image.gz

image.gz will contain the first 63 blocks of /dev/sda, followed by
an ntfsclone image of /dev/sda1, all compressed with gzip -9.

Author: Stephen Thomas <flabdablet via google mail> 24-Mar-2006"

if [ -z "$1" ]
then
	echo "$usage"
	exit 1
fi

if [ "$1" == "--help" -o "$1" == "-h" ]
then
	echo "$help"
	exit 1
fi

disk="$1"
partition="$disk"1
file="${2:-image.gz}"

if [ -f "$file" ]
then
	echo "About to overwrite $file with image of $disk."
	read -p "Is this OK? (y/n) "
	if [ "${REPLY:0:1}" != y -a "${REPLY:0:1}" != Y ]
	then
		exit 1
	fi
fi

{
	dd if="$disk" bs=512 count=63
	ntfsclone --save-image --output - "$partition"
} |
	gzip -9 >"$file"