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
signature.asc
Description: This is a digitally signed message part.