On Monday 16 Mar 2015 10:19:22 Joerg Schilling wrote: > Try to read the man page and use the direct access to the related > functions. > > From your printout, I cannot even tell whether the device argument was > correct. > > Start with readcd -scanbus
Thank you Joerg, I had two CD drives in the PC I tried previously. readcd was
clever enough to identify the drive with the CD in it, but I specified the
device on the command line just to be sure, following the man page.
This time I tried using a different PC with a single CD drive:
# readcd -scanbus
scsibus0:
0,0,0 0) 'ATA ' 'OCZ-ARC100 ' '1.00' Disk
0,1,0 1) *
0,2,0 2) *
0,3,0 3) *
0,4,0 4) *
0,5,0 5) *
0,6,0 6) *
0,7,0 7) *
scsibus1:
1,0,0 100) 'ATA ' 'WDC WD30EFRX-68E' '0A82' Disk
1,1,0 101) *
1,2,0 102) *
1,3,0 103) *
1,4,0 104) *
1,5,0 105) *
1,6,0 106) *
1,7,0 107) *
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) *
> If you continue with readcd dev=xxx (only needed at all if you have more
> than one CD like drive), you could e.g. try readcd f=out-file -noerror
>
> If your drive cannot read the toc or otherwise believes there is no medium,
> readcd cannot help. You need to check why the toc cannot be read. If the CD
> ic scratched, then try to use Plexiglass polishing paste. Be carefull to
> prevent polishing paste to slip to the paint side and to let the CD move
> on the paint side.
>
> Jörg
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
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 ...
.~~-~~~+~~~-~~~+~~~-~~~+~~~-~~~+~~~-~~~+~~~-~~~+~~~-~~~+~~~-~~~+~~~-~~~+~~~-
~~~+~~~-~~~+~~~-~~~+~~~-~~~+~~~-~~~+~~~-~~~
[snip ...]
There are no visible scratches on the disk, so I am thinking this is not a
mechanical fault, but something to do with the burner. I am glad that I
learned about readcd, but given the above results shall I give up hope and ask
the guy to burn me a new CD using a different burner this time?
--
Regards,
Mick
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