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To: David Fleck <david.fleck@mchsi.com>,
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From: Lowell Gilbert <freebsd-questions-local@be-well.ilk.org>
Date: 06 Nov 2005 09:23:41 -0500
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Subject: Re: CD burning no longer working
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Fabian Keil <freebsd-listen@fabiankeil.de> writes:

> David Fleck <david.fleck@mchsi.com> wrote:
> 
> > System: FreeBSD 4.9-RELEASE-p11
> > 
> > dmesg:
> > acd0: <MSI CD-RW MS-8348/V140D> CD-RW drive at ata1 as master
> > acd0: read 689KB/s (6032KB/s) write 344KB/s (8273KB/s), 2048KB
> > buffer, PIO4 acd0: Reads: CD-R, CD-RW, CD-DA stream, packet
> > acd0: Writes: CD-R, CD-RW, test write, burnproof
> > acd0: Audio: play, 255 volume levels
> > acd0: Mechanism: ejectable tray, unlocked
> > acd0: Medium: no/blank disc
> > 
> > The system has a CD-RW device which has, in the past, worked fine.
> > Trying to burn an .iso right now, however, and getting the following
> > behavior:
> > 
> >   # burncd -f /dev/acd0c data /misc/backup_assemble/backup051105.iso
> > fixate next writeable LBA 0
> >   writing from file /misc/backup_assemble/backup051105.iso size
> > 408480 KB written this track 1472 KB (0%) total 1472 KB
> >   only wrote -1 of 32768 bytes err=5
> > 
> >   fixating CD, please wait..
> >   burncd: ioctl(CDRIOCFIXATE): Input/output error
> > 
> > while the kernel complains:
> >   Nov  5 09:15:10 grond /kernel: acd0: WRITE_BIG - MEDIUM ERROR
> > asc=0x02 ascq=0x00 error=0x00 Nov  5 09:15:10 grond /kernel: acd0:
> > CLOSE_TRACK/SESSION - ILLEGAL REQUEST asc=0x72 ascq=0x04 error=0x00
> > 
> > Same behavior with 2 different CDs.
> > Used to work, now it doesn't, so I'm tempted to blame the hardware.
> > But does anyone have any more specific ideas of what might be going
> > on here?
> 
> I never used burncd, but "/dev/acd0c" looks strange to me.

It is correct for pre-5.x.

The "MEDIUM ERROR" does, indeed, look like hardware problems would be
the top candidate to explain the problem.