Zhang Weiwu <[email protected]> wrote: > Hello. We have a website backup that has to be recovered thanks to > webserver hard disk crash. However the person who burned the backup seems > to have done it wrong. This is what we investigated what most likely > have happened: > > a. he have a DVD+R that has a session on it. > b. he created a backup iso image by merging that session: > $ genisoimage -C ... -M /dev/sr0 -o backup.iso website_backup/ > c. he burnt the backup to a /different/ DVD+R that also had a session: > $ wodim dev=/dev/sr1 backup.iso > (or, might also have been "$ growisofs -M /dev/sr1=backup.iso" ) > d. he happily labeled the DVD+R in /dev/sr1 as "website backup". no > double check. done.
1) wodim does not support to write DVDs (in special DVD+). This is bad in special as it claims that it includes DVD support. 2) If you have "wodim" on your system, there is a big chance that you used "genisoimage" (part of the fork) instead of the original software "mkisofs". Genisoimage is known to have many bugs that in special hit you in multi-session mode. Jörg -- EMail:[email protected] (home) Jörg Schilling D-13353 Berlin [email protected] (uni) [email protected] (work) Blog: http://schily.blogspot.com/ URL: http://cdrecord.berlios.de/private/ ftp://ftp.berlios.de/pub/schily -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
