Mount some DVDs problem

[isri]

Hello,

I have problems with mounting some DVDs using my Ubuntu desktop (10.10).

Last time I've bought 50 the same DVDs (Verbatim DVD+R) to make some space on my laptop drive (currently Mint 9). All of them were burned in the same way. All were burned fine.

Today I wanted to copy some data from those DVDs to my desktop and it appears I'm not able to mount them.

They are mounting with no errors on my laptop and two other desktops but on my main I'm getting:


[ 23:00:51 11-12-04 ]
- %: /home> sudo mount /dev/sr0 /media/cd
mount: /dev/sr0: unknown device
zsh: exit 32 sudo mount /dev/sr0 /media/cd

[ 23:01:11 11-12-04 ]
- %: /home> sudo mount /dev/sr0 /media/cd -t iso9660
mount: no medium found on /dev/sr0
zsh: exit 32 sudo mount /dev/sr0 /media/cd -t iso9660

[ 23:04:00 11-12-04 ]
- %: /home> sudo mount /dev/sr0 /media/cd -t udf
mount: no medium found on /dev/sr0
zsh: exit 32 sudo mount /dev/sr0 /media/cd -t udf
I've tested about 10 from those 50 and get about 4 that are not working - the same way. Just on my desktop - all are working on other computers (Ubuntu, Mint, XP).


sudo hdparm -iI /dev/sr0

/dev/sr0:

Model=ATAPI iHAS122 8, FwRev=3L04, SerialNo=
Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=unknown, MaxMultSect=0
(maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5
AdvancedPM=no
Drive conforms to: Unspecified: ATA/ATAPI-4,5,6,7

* signifies the current active mode


ATAPI CD-ROM, with removable media
Model Number: ATAPI iHAS122 8
Serial Number:
Firmware Revision: 3L04
Standards:
Likely used CD-ROM ATAPI-1
Configuration:
DRQ response: 50us.
Packet size: 12 bytes
cache/buffer size = unknown
Capabilities:
LBA, IORDY(can be disabled)
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* PACKET command feature set
* DEVICE_RESET command
* NOP cmd
* Mandatory FLUSH_CACHE
* Gen1 signaling speed (1.5Gb/s)
* Host-initiated interface power management
* Phy event counters
Device-initiated interface power management
* Software settings preservation


My DVD drive is rather fine - I've checked with some other DVDs (+R; -R; DL burned earlier or later) and CDs - working fine.

Has anyone any idea?

Thanks

[moondoggy2]

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