Re: [gentoo-user] Re: Damaged CD medium

[Mick]

On Monday 16 Mar 2015 16:51:34 Joerg Schilling wrote:
> Mick <michaelkintzios@×××××.com> wrote:
> > scsibus2:
> > 	2,0,0	200) 'PIONEER ' 'BD-RW   BDR-209D' '1.10' Removable CD-ROM
> > 	2,1,0	201) *
> > 	2,2,0	202) *
> > 	2,3,0	203) *
> > 	2,4,0	204) *
> > 	2,5,0	205) *
> > 	2,6,0	206) *
> > 	2,7,0	207) *
>
> Pioneer is a good manufacturer...

Ah!  Yes, I was paying attention when you mentioned this in an older thread.  
I also checked online reviews to confirm that they were still making good 
devices before I ordered this one.


> > Running 'readcd f=cd_test.out -noerror' gives me an ever increasing
> > number of errors, on each sector (currently up to sector 6 and still
> > going strong):
> >
> > # readcd f=cd_test.out -noerror
> > No target specified, trying to find one...
> > Using dev=2,0,0.
> > Read  speed: 22160 kB/s (CD 125x, DVD 16x, BD  4x).
> > Write speed: 22160 kB/s (CD 125x, DVD 16x, BD  4x).
> > Capacity: 250000 Blocks = 500000 kBytes = 488 MBytes = 512 prMB
> > Sectorsize: 2048 Bytes
> > Copy from SCSI (2,0,0) disk to file 'cd_test.out'
> > end:    250000
> > readcd: Input/output error. read_g1: scsi sendcmd: no error
> > CDB:  28 00 00 00 00 00 00 00 40 00
> > status: 0x2 (CHECK CONDITION)
> > Sense Bytes: F0 00 03 00 00 00 00 0E 00 00 00 00 11 05 00 00
> > Sense Key: 0x3 Medium Error, Segment 0
> > Sense Code: 0x11 Qual 0x05 (l-ec uncorrectable error) Fru 0x0
> > Sense flags: Blk 0 (valid)
> > cmd finished after 7.030s timeout 40s
>
> This is an error at the layer above the audio sector. You may try to use:
>
> cdrecord -noerror -edc-corr

I think you meant to say:  

readcd -noerror -edc-corr

This is was I am getting.

# readcd -noerror -edc-corr
No target specified, trying to find one...
Using dev=2,0,0.
Read  speed: 22160 kB/s (CD 125x, DVD 16x, BD  4x).
Write speed: 22160 kB/s (CD 125x, DVD 16x, BD  4x).
Capacity: 250000 Blocks = 500000 kBytes = 488 MBytes = 512 prMB
Sectorsize: 2048 Bytes
Copy from SCSI (2,0,0) disk to file '/dev/null'
end:    250000
readcd: Input/output error. read_cd: scsi sendcmd: no error
CDB:  BE 00 00 00 00 00 00 00 37 F8 00 00
status: 0x2 (CHECK CONDITION)
Sense Bytes: 70 00 05 00 00 00 00 0E 00 00 00 00 64 00 00 00
Sense Key: 0x5 Illegal Request, Segment 0
Sense Code: 0x64 Qual 0x00 (illegal mode for this track) Fru 0x0
Sense flags: Blk 0 (not valid) 
cmd finished after 0.016s timeout 40s
readcd: Input/output error. Cannot read source disk
readcd: Retrying from sector 0.
.
readcd: Input/output error. Error on sector 0 not corrected. Total of 1 
errors.
readcd: -noerror set, continuing ...
.
readcd: Input/output error. Error on sector 1 not corrected. Total of 2 
errors.
readcd: -noerror set, continuing ...
.
readcd: Input/output error. Error on sector 2 not corrected. Total of 3 
errors.
readcd: -noerror set, continuing ...
.
readcd: Input/output error. Error on sector 3 not corrected. Total of 4 
errors.
readcd: -noerror set, continuing ...


The count of errors runs in the thousands, until I cancel the command.


> I recommend to use Verbatim media if you like to do archiving.
>
> Note that piles of 50+ CDs may have worse media than thos up to 25 per
> package.
>
> You can check this with cdrecord -v -atip
>
> verbatim e.g. sells cheap media from Moser Baer India (MBI) but still with
> better quality than MBI labelled media. Better verbatim media identify as
> Verbatim (DVDs and BluRays may use IDs from the business group).


Thanks again for your help (and software) Jörg.  I usually buy memorex and 
verbatim when I burn my own CDs with good results, but this sample was created 
by a friend of mine, who's now a few thousand miles away.  I will be using my 
media and burner when I meet him next time, to avoid disappointment.  ;-) 

-- 
Regards,
Mick