Hello, I have been using xorriso for sometime now. Recently the tar file exceeded a single layer media and so I purchased double layer media. I have not been able get reliable burns on the double layer. The media was labeled "for Video". So I found some Maxell that was labeled "for Data" and ordered five of them. Two have worked very well every time for my 26 GByte tar file. The other three discs have the same issue as the earlier media. I suspect the two that are working will eventually give problems as the backup grows.
The format, erase, and burn processes all complete normally with no issues or errors. When I mount and attempt to read the tar file it aborts with an error message. The script I am using is what I wrote sometime back. #/bin/sh DAY=`date --date=yesterday +%a` FILE_NAME=tmgemail_backup.tar.tgz DEVICE=/dev/sr0 LOG=/home/data/backups/dvdlog.txt umount $DEVICE /usr/bin/xorriso -stream_recording on -outdev $DEVICE -joliet on \ -blank as_needed -speed "-1" \ -map /backup/$DAY/$FILE_NAME /tmgemail/$FILE_NAME &>$LOG mount $DEVICE /backup/dvd &>>$LOG tar -tzf /backup/dvd/*/* &>>$LOG cmp -l /backup/dvd/*/* /backup/$DAY/$FILE_NAME &>>$LOG umount $DEVICE I recently added the last lines to attempt to verify if the file was actually usable. I also added the -speed "-1" option to attempt to lower the write speed but it did not have any effect. With or without the quotes. It still reports 2.1x speed. Note: tmgemail is the name of the server. Any suggestion on how to get a reliable burn? Thank you, James