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Re: Odd burn error

Joerg Schilling wrote:
Bill Davidsen <davidsen@tmr.com> wrote:

I'd like to think this was a media error, but the "no error" seems to

RTFM man cdrecord to understand what this means.

indicate otherwise. This is a regular backup, I do one of my working home firectories, then some other stuff in other sessions. The data for this burn is <300MB, and worked with another CD of the same brand.

Man page seems to say exactly what I expected, the kernel didn't reject the command because it was illegal or couldn't transfer it to the drive. That lets out a raft of things like having the drivers loaded in the wrong order and such.

iccarus:root> addir -ZG -f20 BILL=/home/bill
+ mkisofs -q -dDRNL -pad -graft-points BILL=/home/bill
+ cdrecord dev=0,0,0 -waiti -multi -eject fs=20m -
Warning: creating filesystem that does not conform to ISO-9660.
Cdrecord-Clone 2.01a19 (i686-pc-linux-gnu) Copyright (C) 1995-2003 Jörg Schilling

A bit old.

scsidev: '0,0,0'
scsibus: 0 target: 0 lun: 0
Linux sg driver version: 3.1.24
Using libscg version 'schily-0.7'
Device type    : Removable CD-ROM
Version        : 0
Response Format: 1
Vendor_info    : 'AOPEN   '
Identifikation : 'CD-RW CRW2040   '
Revision       : '1.01'
Device seems to be: Generic mmc CD-RW.
Using generic SCSI-3/mmc   CD-R/CD-RW driver (mmc_cdr).
cdrecord: WARNING: Total disk size unknown. Data may not fit on disk.
Starting to write CD/DVD at speed 16 in real TAO mode for multi session.
Last chance to quit, starting real write    0 seconds. Operation starts.
Turning BURN-Free off
cdrecord: Input/output error. write_g1: scsi sendcmd: no error
CDB:  2A 00 00 00 4B 71 00 00 1F 00
status: 0x2 (CHECK CONDITION)
Sense Bytes: F1 00 05 00 00 4B 74 0C 00 00 00 00 10 02 00 00
Sense Key: 0x5 Illegal Request, deferred error, Segment 0
Sense Code: 0x10 Qual 0x02 (id crc or ecc error) [No matching qualifier] Fru 0x0Sense flags: Blk 19316 (valid) cmd finished after 0.000s timeout 40s
write track data: error after 39553024 bytes
cdrecord: A write error occured.
cdrecord: Please properly read the error message above.

It is obviously a problem inside your drive.

That's helpful, I was worried that I got a CD burning error in my keyboard or left speaker.

I suppose the chances of getting more information on what actually happened are small, an ecc error on a write is non-obvious to me, since I would expect that to be calculated in the drive and not visible to the CPU.

bill davidsen <davidsen@tmr.com>
  CTO TMR Associates, Inc
  Doing interesting things with small computers since 1979

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