Re: Reading MtRainier CD in plain CD unit?
On 2 July 2011 09:00, Thomas Schmitt <scdbackup@gmx.net> wrote:
> Hi,
>
>> $ dd if=/dev/sr1 bs=2048 | wc
>> dd: reading `/dev/sr1': Input/output error
>> 3342336 bytes (3.3 MB) copied, 23.4675 s, 142 kB/s
>
> This is not a normal end of reading, it is more than the 2 MB
> of GAA, and it is darn slow.
>
> This looks like the drive is not happy with the media
> regardless of MRW.
> Probably you will have to try it with another one.
>
>
>> dmesg shows a dozen of messages like this:
>> Buffer I/O error on device sr1, logical block 1658
>
> We might learn a bit more from
>
> xorriso -outdev /dev/sr1 \
> -check_media use=outdev what=disc time_limit=60 --
>
Hi,
I did this:
xorriso -outdev /dev/sr0 -check_media use=outdev what=disc time_limit=6000
and the result is (the end of it, the rest scrolled off the buffer...) :
xorriso : UPDATE : 359848 of 359848 sectors examined in 5404 seconds
Media checks : lba , size , quality
Media region : 0 , 1632 , + good
Media region : 1632 , 32 , - unreadable
Media region : 1664 , 16 , + slow
Media region : 1680 , 15 , + partial
Media region : 1695 , 1 , - unreadable
Media region : 1696 , 1440 , + good
Media region : 3136 , 16 , + slow
Media region : 3152 , 112 , + good
Media region : 3264 , 16 , + slow
Media region : 3280 , 16112 , + good
Media region : 19392 , 16 , + slow
Media region : 19408 , 4080 , + good
Media region : 23488 , 16 , + slow
Media region : 23504 , 82064 , + good
Media region : 105568 , 16 , + slow
Media region : 105584 , 17200 , + good
Media region : 122784 , 16 , + slow
Media region : 122800 , 39360 , + good
Media region : 162160 , 16 , + slow
Media region : 162176 , 4080 , + good
Media region : 166256 , 16 , + slow
Media region : 166272 , 4144 , + good
Media region : 170416 , 16 , + slow
Media region : 170432 , 8336 , + good
Media region : 178768 , 16 , + slow
Media region : 178784 , 4096 , + good
Media region : 182880 , 16 , + slow
Media region : 182896 , 7792 , + good
Media region : 190688 , 16 , + slow
Media region : 190704 , 4416 , + good
Media region : 195120 , 16 , + slow
Media region : 195136 , 4080 , + good
Media region : 199216 , 16 , + slow
Media region : 199232 , 95312 , + good
Media region : 294544 , 16 , + slow
Media region : 294560 , 704 , + good
Media region : 295264 , 64584 , - unreadable
xorriso : NOTE : Tolerated problem event of severity 'SORRY'
xorriso : NOTE : -return_with SORRY 32 triggered by problem severity SORRY
If you are interested in the rest, I can repeat the test and save all
the output.
Regards,
David
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