i am now able to write in multiple sessions. i had to do a blank=all using cdrecord-prodvd to do it. but it looks like both sessions need to be an isofs. now i am trying to write multiple tar archives to the dvd media as multi session and it is failing. my first command: # tar cvf - /tmp | growisofs -Z /dev/scd0=/dev/fd/0 works great, exactly what i hoped for. i am able to get the data back from the media using: # readcd dev=0,0,0 f=tarpipe | tar -tvf tarpipe my second command and its output: # tar cvf - /opt | growisofs -M /dev/scd0=/dev/fd/0 tar: Removing leading `/' from member names opt/ opt/lost+found/ opt/ltt/ opt/ltt/catalogs/ opt/ltt/catalogs/enu/ opt/ltt/catalogs/enu/3.2.0.0/ opt/ltt/catalogs/enu/3.2.0.0/d_aitdrv.cat :-( /dev/scd0 doesn't look like isofs... does this imply that there has to be an isofs on the disc to append to it? growisofs did not seem to care that the first image i wrote was not isofs Andy Polyakov wrote:
dvd+rw tools to write multi-session are failing.dvd+rw-tools fully support DVD multi-sessioning and if growisofs fails, then you most likely have wrong expectations:-)i have a pioneer dvr105 using media supplied with drive. # cdrecord-prodvd dev=0,0,0 -v -multi home_stx.tar works great!Except that -multi option is effectively ignored and media is recorded in DAO mode. DAO recordings are *unappendable* by definition, in other words disk is basically finalized and *no* program on earth will be able to append data to it. If you want to record multi-session DVD you have to perform initial recording on either: - *virgin* DVD-R or DVD-RW media; - *fully blanked* DVD-RW media; - DVD-RW media formatted for Restricted Overwrite; with growisofs -Z and keep using growisofs -M to append more data. It's the only way. A.