Specifications

then

O_CDRECORD="$O_CDRECORD −$O_NAME "

continue

O_CDRECORD="$O_CDRECORD $O_NAME=$O_VALUE "

done < "$CFGDIR/$CFG"

set −x #DEBUG

exec cdrecord $O_CDRECORD $ARGS_LEFT

echo "Execution of cdrecord failed."

4.16 How can the CD−info be retrieved?

Somewhere behind the first 32 k on the CD, a block with information about the CD is located. You can

extract the information with the following shell script:

#! /bin/bash

RD=/dev/cdrom

for i in 32768,7 32776,32 32808,32 32958,128 33086,128 33214,128 \

33342,128 33470,32 33581,16 33598,16 33615,16 33632,16

old_IFS="$IFS"

IFS=","

set −− $i

IFS="$old_IFS"

OFFSET=$1

LENGTH=$2

echo "*`dd if=$RD bs=1 skip=$OFFSET count=$LENGTH 2> /dev/null`#"

done

4.17 What about re−writing

When overwriting CD−RW media, specify the parameter blank=fast to cdrecord. That's all. See the man page

of cdrecord for details about this parameter.

4.18 How to create a multi−session CD?

First of all, the image for a multi−session CD must be formatted using the ISO−9660 filesystem using

RockRidge−extensions. And you must use the option −multi for cdrecord as long as you want to add further

sessions. So at least for the first session, you must specify the option −multi.

Some CD−writers have no support for CD−ROM XA mode 2 or for session−at−once (SAO), so you need to

CD−Writing HOWTO

4.16 How can the CD−info be retrieved? 28