On Tue, 9 Aug 2005, Laszlo Nagy wrote:

I would like to use my DVDRAM device with UDF packet writing.

System info:

dybs1 /root# uname -a Linux dybs1 2.6.11.4-21.7-default #1 Thu Jun 2 14:23:14 UTC 2005 i686 i686 i386 GNU/Linux

It is a SuSe 9.3 system.

Hardware info:

LG 4120B DVD drive on /dev/hdb

This unit was produced about one year ago, it was the first dual-layer dvd drive from LG.

I tried to format the disc.

dybs1 /home/nagylzs# dvd+rw-format -blank /dev/hdb * DVD??RW/-RAM format utility by , version 4.10. * 4.7GB DVD-RW media in Sequential mode detected. * blanking \

I do not get an error, but this program finishes within 2 seconds. Is this normal? Usually it took a minute to format a CDRW disc on my old CDRW drive.

Packet writing requires the disc to be in "restricted overwrite" mode. You enable this mode with the command: dvd+rw-format -force /dev/hdb ie, without the -blank switch. Then extend the track by writing empty data to the disc: cat /dev/zero | growisofs -Z /dev/hdb=/dev/fd/0 If everything worked, dvd+rw-mediainfo should report a disc in "restricted overwrite" mode with a track state "complete incremental" and a track size about 2.3 million 2KB blocks big.

I have 'mkudffs' and other programs installed but I really don't know how to start.

Something like this: 1. Make sure you have a new enough pktsetup program. If you run pktsetup without arguments, the help text should include instructions for driver versions < 0.2.0 and other instructions for versions >= 0.2.0. If it doesn't, you can get a patch from here: http://web.telia.com/~u89404340/packet.html 2. If you want to avoid a data corruption bug, upgrade to at least kernel 2.6.12 or apply this patch to your current kernel: http://www.kernel.org/git/gitweb.cgi?p=linux/kernel/git/torvalds/linux-2.6.g... 3. Run pktsetup 0 /dev/hdb This will create a device file called /dev/pktcdvd/0. If this fails with something like "ctl open: not a directory", you may have a udev installation that gets in the way. Try "rm /dev/pktcdvd" and then execute the pktsetup command again. 4. Create a filesystem and mount it. mkudffs /dev/pktcdvd/0 mkdir /mnt/somewhere mount /dev/pktcdvd/0 /mnt/somewhere -t udf -o rw,noatime 5. Write some files to it. If you want the filesystem to be writable by any user, run chmod 777 /mnt/somewhere when the filesystem is mounted. 6. When finished, unmount the disc and remove the packet device. umount /mnt/somewhere pktsetup -d 0 -- Peter Osterlund - petero2@telia.com http://web.telia.com/~u89404340