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#!/bin/bash
# Create a bootable harddisk (or compact flash) image
Usage() {
cat <<-EOF
Usage: `basename "$0"` OPTIONS <svn rep>
-h this help
-m <stage1> path to grub stage1
-n <stafe2> path to grub stage2
-o <hdimg file> resulting hd image
-i <img file> filesystem image
-p <size> partition size in kilobytes
EOF
}
while getopts "hm:n:i:o:p:" OPT
do
case "$OPT" in
h) Usage
exit 1
;;
m) STAGE1="$OPTARG"
;;
n) STAGE2="$OPTARG"
;;
o) IMAGEFILE="$OPTARG"
;;
i) FSIMAGE="$OPTARG"
;;
p) PARTSIZE=$(($OPTARG * 2))
;;
esac
done
# get the first 446 bytes of stage1
dd if=$STAGE1 bs=446 count=1 > $IMAGEFILE
# append a partition table to it.
# We leave space of 299 blocks to
# the first partition to put stage2 into
# this space
genpart -c -b 300 -s $PARTSIZE >> $IMAGEFILE
genpart -b 0 -s 0 >> $IMAGEFILE
genpart -b 0 -s 0 >> $IMAGEFILE
genpart -b 0 -s 0 -m >> $IMAGEFILE
# append stage2 padded to 299 blocks
cat $STAGE2 /dev/zero | dd bs=512 count=299 >> $IMAGEFILE
# append the ext2 image padded to PARTSIZE blocks
cat $FSIMAGE /dev/zero | dd bs=512 count=$(($PARTSIZE - 300)) >> $IMAGEFILE
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