[TriLUG] Strange problem when burning CD-ROMs

[Jason Tower]

> Jan  1 10:59:34 fezzik kernel: attempt to access beyond end of device

the knoppix images are very large, about as large as an ISO image can be.  is 
it possible you are using CDR media that only supports 650MB (74 minutes) 
instead of 700MB (80 minutes)?

On Wednesday 01 January 2003 02:21, Tom Bryan wrote:
> I'm having a strange problem when burning CDs where my machine locks hard.
> For example, today I was burning a KNOPPIX ISO to CD-R.  I was logged in
> under KDE.  I was doing the burn from a Konsole (as root) using cdrecord.
> Just after the burn started, I moved the mouse to switch to another
> desktop. I couldn't find the mouse pointer.  Then I noticed that the
> console was no longer showing progress on the CD burn.  I looked down, and
> caps lock  and num lock lights were blinking.  The machine seemed to be
> frozen hard.  I couldn't even ping it and had to power down (/me happy that
> ext3 is a journalled file system).  Of course, the CD image was corrupt.
>
> Anyway, I've had this problem a few times, and it only seems to happen when
> I have X up (always running KDE at my house).  I have successfully burned
> CDs from KDE before, sometimes at the command line and sometimes with
> xcdroast. I'm not sure when this problem started...possibly after a
> particular version of Red Hat.  (This machine has run 7.1, 7.2, and 7.3.) 
> I'm not sure because after the machine locked a couple of times last year,
> I started doing all of my burning from a console.  I was hoping that
> perhaps the problem would go away with the new year. :)
>
> I'm running a stock RH 7.3 machine, with the following hardware (cut from
> dmesg output)
>
> scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.5
>         <Adaptec 19160B Ultra160 SCSI adapter>
>         aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs
>
>   Vendor: YAMAHA    Model: CRW2100S          Rev: 1.0H
>   Type:   CD-ROM                             ANSI SCSI revision: 02
>
> The last messages in /var/log/messages are
> Jan  1 10:57:35 fezzik kernel: cdrom: This disc doesn't have any tracks I
> recognize!
> Jan  1 10:58:06 fezzik last message repeated 31 times
> Jan  1 10:59:07 fezzik last message repeated 59 times
> Jan  1 10:59:25 fezzik last message repeated 18 times
> Jan  1 10:59:34 fezzik kernel: attempt to access beyond end of device
> Jan  1 10:59:34 fezzik kernel: 0b:00: rw=0, want=34, limit=2
> Jan  1 10:59:34 fezzik kernel: isofs_read_super: bread failed, dev=0b:00,
> iso_blknum=16, block=16
>
> I'm not sure whether those are before I started the burn or after it had
> begun or after the machine locked.  I'm not certain on the timing.
>
> Any ideas?
>
> ---Tom
>
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