On Sep 3, 2014, at 6:24 AM, Thomas Schmitt <[email protected]> wrote:
> Hi, > >> It's old, but most likely not worn-off. > > I mostly meant the drive of Jawahar Panchal, of which we > do not yet know the model name. > Hello again - thanks to everyone for their time and help! This has been great reading/learning for myself. I will try and get the model name of the drive this weekend, and will also try with a DVD-RW disc to see if that works. > Ok. I retract "worn-off" and replace by "age-wise challenged". :)) > > >> root@lsXX:/mnt# xorriso -outdev /dev/sr0 -list_profiles >> ... >> Media current: is not recognizable >> Media status : is not recognizable >> ... >> Media summary: 1 session, 57583 data blocks, 112m data, 0 free > > Not being a MMC drive, it might be not suitable for libburn. > > >> So, maybe firmware just checks the "Media status" as above and then fails >> because it's not "recognizable" ? > > "not recognizable" is a misperception of libburn and xorriso, > probably because SCSI command GET CONFIGURATION is not supported > by the drive. > Other commands like READ DISC INFORMATION, READ TRACK INFORMATION, > or READ TOC/PMA/ATIP seem to work. > > One would have to run > > xorriso -scsi_log on -outdev /dev/sr0 -list_profiles \ > 2>&1 | tee -i /tmp/xorriso.log > > in order to learn which particular commands do not work. > I am quite astonished to see a DVD drive with such > handicaps. So technically it would be of interest for me > to get such a /tmp/xorriso.log in private. > (It will hardly help this thread, though.) > > >> root@lsXX:/mnt# dd if=/dev/cdrom bs=2 count=1 | od -c >> ... >> 0000000 200 \0 > > Grmpf. At least the problem is not easily reproducible. > Maybe the firmware complains about bad magic for more > mismatches than only the first LIF bytes. > > The fact that your DVD+RW booted, shows that the firmware > does not demand a real LIF System Block as of > http://www.hp9845.net/9845/projects/hpdir/. > We store the address of the 32-bit kernel file where LIF > has "Directory Start". > > A checkread of full image size from CD-RW might show that > some other blocks (of 2048 bytes) are bad. > Or maybe the DVD drive needs some heating by reading DVD+RW > before it is willing to read CD-RW. > > > Have a nice day :) > > Thomas > -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: https://lists.debian.org/[email protected]
