1. Use different recording the media.
2. Clean the cd-r lenses as Geofrey mentioned.
3. Try complete poweroff, NOT reboot. (I know, I know, but it works
nevertheless)
---
Oleg Kobets
Network Administrator
Breakthrough LTD.
054-747132
03-6349922 Ext 26
"Black hole is God divided by zero"
----- Original Message -----
From: "Oleg Goldshmidt" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, November 24, 2002 1:06 PM
Subject: cdrecord, mount complain there is no disk
>
> Hi everybody,
>
> All of a sudden, my CD writer refuses to work properly (it has been
> working just fine until now, for at least 18 months or so).
>
> Platform:
>
> RH7.3 on Pentium III 866 Mhz, different variations of RH's 2.4.18
> (2.4.18-{5,10,18.7.x}), cdrecord-1.10-11.
>
> Symptoms:
>
> # cdrecord -v speed=4 dev=0,0,0 -data rh.iso
> Cdrecord 1.10 (i686-pc-linux-gnu) Copyright (C) 1995-2001 Jorg Schilling
> TOC Type: 1 = CD-ROM
> scsidev: '0,0,0'
> scsibus: 0 target: 0 lun: 0
> Linux sg driver version: 3.1.24
> Using libscg version 'schily-0.5'
> atapi: 1
> Device type : Removable CD-ROM
> Version : 0
> Response Format: 1
> Vendor_info : 'RICOH '
> Identifikation : 'CD-R/RW MP7120A '
> Revision : '1.20'
> Device seems to be: Generic mmc CD-RW.
> Using generic SCSI-3/mmc CD-R driver (mmc_cdr).
> Driver flags : SWABAUDIO
> FIFO size : 4194304 = 4096 KB
> Track 01: data 623 MB
> Total size: 715 MB (70:54.74) = 319106 sectors
> Lout start: 716 MB (70:56/56) = 319106 sectors
> cdrecord: Input/output error. test unit ready: scsi sendcmd: no error
> CDB: 00 00 00 00 00 00
> status: 0x2 (CHECK CONDITION)
> Sense Bytes: 70 00 02 00 00 00 00 0C 00 00 00 00 3A 00 00 00
> Sense Key: 0x2 Not Ready, Segment 0
> Sense Code: 0x3A Qual 0x00 (medium not present) Fru 0x0
> Sense flags: Blk 0 (not valid)
> cmd finished after 0.001s timeout 40s
> cdrecord: No disk / Wrong disk!
>
> It does seem that there is nothing wrong with cdrecord or kernel:
> cdrecord is talking to the device, also
>
> # cdrecord -scanbus
> Cdrecord 1.10 (i686-pc-linux-gnu) Copyright (C) 1995-2001 Jorg Schilling
> Linux sg driver version: 3.1.24
> Using libscg version 'schily-0.5'
> scsibus0:
> 0,0,0 0) 'RICOH ' 'CD-R/RW MP7120A ' '1.20' Removable CD-ROM
> 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) *
>
> Here is the list of loaded modules, which may be relevant:
>
> # /sbin/lsmod
> Module Size Used by Not tainted
> sr_mod 16056 0 (autoclean)
> sb 8992 0 (autoclean)
> sb_lib 39456 0 (autoclean) [sb]
> uart401 7744 0 (autoclean) [sb_lib]
> sound 69388 0 (autoclean) [sb_lib uart401]
> soundcore 6212 5 (autoclean) [sb_lib sound]
> tdfx 37656 1
> agpgart 40256 0 (unused)
> binfmt_misc 7236 1
> autofs 11172 0 (autoclean) (unused)
> 3c59x 28328 1
> ide-scsi 9376 0
> scsi_mod 104848 2 [sr_mod ide-scsi]
> ide-cd 30144 0
> cdrom 31936 0 [sr_mod ide-cd]
> usb-uhci 24324 0 (unused)
> usbcore 71072 1 [usb-uhci]
> ext3 64800 5
> jbd 47892 5 [ext3]
>
> Nor can I read a CD from the drive, seemingly for the same reason:
>
> # mount /dev/cdrom1 /mnt/cdrom1
> mount: block device /dev/cdrom1 is write-protected, mounting read-only
> mount: No medium found
>
> Is it a problem with the optical system? What can I check? Is there a
> way to clean it or something? Any pointers? I'd like to avoid buying a
> new CD writer if I can.
>
> I STFWed, of course, saw quite a few complaints, but no useful
> diagnostics procedure or pointers to solutions.
>
> Thanks,
>
> --
> Oleg Goldshmidt | [EMAIL PROTECTED]
> ========================================================
> First binary search algorithm - J. Mauchly, 1946
> First correct binary search algorithm - D.H.Lehmer, 1960
>
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