UNIX for Advanced & Expert Users

#!/bin/bash

DEVICE="/dev/sr0"
VERBOSE=1

bchex=`dd if=${DEVICE} skip=34887 bs=1 count=2 conv=swab 2>/dev/null | xxd | cut -d" " -f2`

bcdec=`printf "%d" 0x${bchex}`

bootable=`dd if=${DEVICE}  bs=1 skip=$(( bcdec * 2048 + 32))  count=1  2>/dev/null | xxd | cut -d" " -f2`

if [[ $bootable = 88 ]]; then
   [ $VERBOSE ] && printf "Bootable CDROM\n"
   exit 0
else
   [ $VERBOSE ] && printf "Not a bootable CDROM\n"
   exit 1
fi