Hello,
sorry for the noise.
My DVD writer is completly broken now, my computer isn't able to boot
with a bootable cdrom inside.
I think it died.
The last time it mounted a cdrom was this morning with the next dmesg
history:
# mount /dev/cdrom /media/cdrom # ok
# dmesg
[ 6222.172413] ISO 9660 Extensions: Microsoft Joliet Level 3
[ 6222.209343] ISOFS: changing to secondary root
[ 6282.442706] sr 0:0:0:0: [sr0] Unhandled sense code
[ 6282.442712] sr 0:0:0:0: [sr0] Result: hostbyte=DID_OK
driverbyte=DRIVER_SENSE
[ 6282.442718] sr 0:0:0:0: [sr0] Sense Key : Medium Error [current]
[ 6282.442726] sr 0:0:0:0: [sr0] Add. Sense: Id CRC or ECC error
[ 6282.442734] sr 0:0:0:0: [sr0] CDB: Read(10): 28 00 00 01 e8 e0 00 00
02 00
[ 6282.442750] end_request: I/O error, dev sr0, sector 500608
[ 6282.442758] __ratelimit: 23 callbacks suppressed
[ 6282.442762] Buffer I/O error on device sr0, logical block 62576
[ 6312.507390] sr 0:0:0:0: [sr0] Unhandled sense code
[ 6312.507397] sr 0:0:0:0: [sr0] Result: hostbyte=DID_OK
driverbyte=DRIVER_SENSE
[ 6312.507403] sr 0:0:0:0: [sr0] Sense Key : Medium Error [current]
[ 6312.507411] sr 0:0:0:0: [sr0] Add. Sense: Id CRC or ECC error
[ 6312.507418] sr 0:0:0:0: [sr0] CDB: Read(10): 28 00 00 01 e8 e0 00 00
02 00
[ 6312.507435] end_request: I/O error, dev sr0, sector 500608
[ 6312.507443] Buffer I/O error on device sr0, logical block 62576
[ 6324.161909] sr 0:0:0:0: [sr0] Unhandled sense code
[ 6324.161915] sr 0:0:0:0: [sr0] Result: hostbyte=DID_OK
driverbyte=DRIVER_SENSE
[ 6324.161921] sr 0:0:0:0: [sr0] Sense Key : Medium Error [current]
[ 6324.161929] sr 0:0:0:0: [sr0] Add. Sense: Id CRC or ECC error
[ 6324.161937] sr 0:0:0:0: [sr0] CDB: Read(10): 28 00 00 01 e9 02 00 00
02 00
[ 6324.161953] end_request: I/O error, dev sr0, sector 500744
[ 6324.161961] Buffer I/O error on device sr0, logical block 62593
[ 6350.485471] sr 0:0:0:0: [sr0] Unhandled sense code
[ 6350.485476] sr 0:0:0:0: [sr0] Result: hostbyte=DID_OK
driverbyte=DRIVER_SENSE
[ 6350.485481] sr 0:0:0:0: [sr0] Sense Key : Medium Error [current]
[ 6350.485488] sr 0:0:0:0: [sr0] Add. Sense: Id CRC or ECC error
[ 6350.485494] sr 0:0:0:0: [sr0] CDB: Read(10): 28 00 00 01 e9 02 00 00
02 00
[ 6350.485507] end_request: I/O error, dev sr0, sector 500744
[ 6350.485515] Buffer I/O error on device sr0, logical block 62593
[ 6356.738218] sr 0:0:0:0: [sr0] Unhandled sense code
[ 6356.738224] sr 0:0:0:0: [sr0] Result: hostbyte=DID_OK
driverbyte=DRIVER_SENSE
[ 6356.738230] sr 0:0:0:0: [sr0] Sense Key : Medium Error [current]
[ 6356.738237] sr 0:0:0:0: [sr0] Add. Sense: Unrecovered read error
[ 6356.738245] sr 0:0:0:0: [sr0] CDB: Read(10): 28 00 00 01 e9 04 00 00
02 00
[ 6356.738262] end_request: I/O error, dev sr0, sector 500752
[ 6356.738269] Buffer I/O error on device sr0, logical block 62594
[ 6387.66] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6
frozen
[ 6387.76] sr 0:0:0:0: [sr0] CDB: Read(10): 28 00 00 01 e9 04 00 00
02 00
[ 6387.99] ata1.00: cmd a0/01:00:00:00:10/00:00:00:00:00/a0 tag 0
dma 4096 in
[ 6387.000101] res 40/00:03:00:00:08/00:00:00:00:00/a0 Emask
0x4 (timeout)
[ 6387.000107] ata1.00: status: { DRDY }
[ 6391.032032] ata1: soft resetting link
[ 6391.212329] ata1.00: configured for UDMA/44
[ 6391.213549] ata1: EH complete
[ 6403.110312] sr 0:0:0:0: [sr0] Unhandled sense code
[ 6403.110319] sr 0:0:0:0: [sr0] Result: hostbyte=DID_OK
driverbyte=DRIVER_SENSE
[ 6403.110325] sr 0:0:0:0: [sr0] Sense Key : Medium Error [current]
[ 6403.110332] sr 0:0:0:0: [sr0] Add. Sense: Id CRC or ECC error
[ 6403.110340] sr 0:0:0:0: [sr0] CDB: Read(10): 28 00 00 01 e9 04 00 00
02 00
[ 6403.110356] end_request: I/O error, dev sr0, sector 500752
[ 6403.110364] Buffer I/O error on device sr0, logical block 62594
[ 6405.592185] sr 0:0:0:0: [sr0] Unhandled sense code
[ 6405.592191] sr 0:0:0:0: [sr0] Result: hostbyte=DID_OK
driverbyte=DRIVER_SENSE
[ 6405.592197] sr 0:0:0:0: [sr0] Sense Key : Medium Error [current]
[ 6405.592205] sr 0:0:0:0: [sr0] Add. Sense: Unrecovered read error
[ 6405.592213] sr 0:0:0:0: [sr0] CDB: Read(10): 28 00 00 01 e9 04 00 00
02 00
[ 6405.592229] end_request: I/O error, dev sr0, sector 500752
[ 6405.592236] Buffer I/O error on device sr0, logical block 62594
[ 6407.001073] sr 0:0:0:0: [sr0] Unhandled sense code
[ 6407.001089] sr 0:0:0:0: [sr0] Result: hostbyte=DID_OK
driverbyte=DRIVER_SENSE
[ 6407.001095] sr 0:0:0:0: [sr0] Sense Key : Medium Error [current]
[ 6407.001103] sr 0:0:0:0: [sr0] Add. Sense: Unrecovered read error
[ 6407.00] sr 0:0:0:0: [sr0] CDB: Read(10): 28 00 00 01 e9 04 00 00
02 00
[ 6407.001127] end_request: I/O error, dev sr0, sector 500752
[ 6407.001134] Buffer I/O error on device sr0, logical block 62594
[ 6407.632757] sr 0:0:0:0: [sr0] Unhandled sense code
[ 6407.632763] sr 0:0:0:0: [sr0] Result: hostbyte=DID_OK
driverbyte=DRIVER_SENSE
[ 6407.632769] sr 0:0:0:0: [sr0] Sense Key : Medium Error [current]
[ 6407.632777] sr