DVD drive will not read burned dual layer discs

English Hardware
1

Has any seen this or have suggestions on how to fix this. I can read the original disks but I cannot read the backup. The backup disc was burned on Window$ using Nero.

I am trying to read the disc using both VLC and Totem but you can see in /var/log/messages there is an issue with reading the disc. This disc is readable in the Window$ box and on all DVD stand alone players.

Feb 21 20:17:09 delltop kernel: [40761.304725] sr 0:0:1:0: [sr0] Unhandled sense code
Feb 21 20:17:09 delltop kernel: [40761.304752] sr 0:0:1:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Feb 21 20:17:09 delltop kernel: [40761.304772] sr 0:0:1:0: [sr0] Sense Key : Medium Error [current]
Feb 21 20:17:09 delltop kernel: [40761.304794] Info fld=0x3e7e00
Feb 21 20:17:09 delltop kernel: [40761.304806] sr 0:0:1:0: [sr0] Add. Sense: Unrecovered read error
Feb 21 20:17:09 delltop kernel: [40761.304829] end_request: I/O error, dev sr0, sector 16381952
Feb 21 20:17:09 delltop kernel: [40761.304852] Buffer I/O error on device sr0, logical block 2047744
Feb 21 20:17:18 delltop kernel: [40770.281055] sr 0:0:1:0: [sr0] Unhandled sense code
Feb 21 20:17:18 delltop kernel: [40770.281081] sr 0:0:1:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Feb 21 20:17:18 delltop kernel: [40770.281101] sr 0:0:1:0: [sr0] Sense Key : Medium Error [current]
Feb 21 20:17:18 delltop kernel: [40770.281124] Info fld=0x3e7e00
Feb 21 20:17:18 delltop kernel: [40770.281136] sr 0:0:1:0: [sr0] Add. Sense: Unrecovered read error
Feb 21 20:17:18 delltop kernel: [40770.281158] end_request: I/O error, dev sr0, sector 16381952
Feb 21 20:17:18 delltop kernel: [40770.281178] Buffer I/O error on device sr0, logical block 2047744

here is the output of /etc/fstab, I have also tried commenting out the cd mount point as in the default config.

# cat /etc/fstab
/dev/disk/by-id/ata-IC25N040ATCS05-0_CLP425F4G9VB7A-part1 swap                 swap       defaults              0 0
/dev/disk/by-id/ata-IC25N040ATCS05-0_CLP425F4G9VB7A-part2 /                    ext4       acl,user_xattr        1 1
proc                 /proc                proc       defaults              0 0
sysfs                /sys                 sysfs      noauto                0 0
debugfs              /sys/kernel/debug    debugfs    noauto                0 0
usbfs                /proc/bus/usb        usbfs      noauto                0 0
devpts               /dev/pts             devpts     mode=0620,gid=5       0 0

# added to trouble shoot mounting copied dvd's# add utf8 after exec to ts
/dev/sr0             /media/cdrom0        iso9660,udf user,noauto,exec,utf8     0 0
#/dev/sr0 /media/cdrom0 iso9660,udf user,noauto 0 0

here is some additional info:

hwinfo --cdrom

17: SCSI 01.0: 10602 CD-ROM (DVD)
[Created at block.247]
UDI: /org/freedesktop/Hal/devices/storage_model_DVD_ROM_GDR8081N
Unique ID: KD9E.Mi2vEJZyQwA
Parent ID: 3p2J.wlEL3EhKcSD
SysFS ID: /class/block/sr0
SysFS BusID: 0:0:1:0
SysFS Device Link: /devices/pci0000:00/0000:00:1f.1/host0/target0:0:1/0:0:1:0
Hardware Class: cdrom
Model: “HL-DT-ST DVD-ROM GDR8081N”
Vendor: “HL-DT-ST”
Device: “DVD-ROM GDR8081N”
Revision: “0108”
Driver: “ata_piix”, “sr”
Driver Modules: “ata_piix”
Device File: /dev/sr0 (/dev/sg1)
Device Files: /dev/sr0, /dev/block/11:0, /dev/scd0, /dev/disk/by-path/pci-0000:00:1f.1-scsi-0:0:1:0, /dev/cdrom, /dev/dvd
Device Number: block 11:0 (char 21:1)
Features: DVD
Config Status: cfg=no, avail=yes, need=no, active=unknown
Attached to: #7 (IDE interface)
Drive Speed: 24
Volume ID: “NEW”
Application: “NERO BURNING ROM”
Creation date: “2009122321270000”

2

fstab is NOT used for CD/DVD’s
why are you fiddling in there
Do you have a copy of your original fstab?

I do not have this issue you describe

3

caf4926, I do still have a backup of fstab and I added the lines to assists with trouble shooting. While Googling for help, some of fixes people have seen was to add the mount points in fstab.

4

I’m wondering if you could read a backup made in Linux.
It seems to me that if you can read the originals but not the backups made in winders, then there must be something in they way it was done.

I would put your fstab back to original, unless you are mounting actual HD’s.

5

Yeah, I am wondering the same thing? I have read that udf maybe causing issues between the two OS’s and that Nero Linux may be able to resolve this? I will give it a try. If it does not work I will see if I can find a newer slim DVD drive. I will post my findings.

thanks

P.S. I put /etc/fstab back to the original config.