Very Computer

My SCSI CD writer (Yamaha 4416S) doesn't read files on CD-Rs and
CD-RWs properly when I use it with Linux (2.0.32, SuSE 5.1).
When I try to read those CDs with Windows 98, everything works
fine. Burning CDs works fine too with both Linux and Windows.

Maybe I don't mount the writer correctly? It reads in my
"/etc/fstab":

/dev/scd1       /cdwriter   iso9660    ro,noauto,user,exec     0 0

Has anybody an idea what is wrong?

Thanks in advance!

        Joe?rg

Quote:> Has anybody an idea what is wrong?

Kili

Quote:> Hi all!   My SCSI CD writer (Yamaha 4416S) doesn't read files
> on CD-Rs and  CD-RWs properly when I use it with Linux (2.0.32,
> SuSE 5.1). When I try to read those CDs with Windows 98,
> everything works fine. Burning CDs works fine too with both
> Linux and Windows.  Maybe I don't mount the writer correctly?
> It reads in my "/etc/fstab":  /dev/scd1       /cdwriter
> iso9660    ro,noauto,user,exec     0 0   Has anybody an idea
> what is wrong?  Thanks in advance!   Joe?rg

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: No. You didn't mention what kind of error messages you get.

I don't get any error messages. Mounting works fine, but most of the files
on the CDs are corrupted. But those corrupted files are okay on the CD - I
checked it with Windows 98. I can traverse the file system structure on the
CD, but I can't read the files without error. For example: GIF and JPEG images
can't be displayed when read by the CD writer because the graphics software
can't read the image data properly.

        Joerg

regards Henrik

--
spammer strikeback:

First of all, thanks for your support. I'm afraid, even with your help I
couldn't solve the problem so far.

Again, the "Toshiba" CD-ROM drive works fine, as well as writing CD-Rs
and
CD-RWs with the "Yamaha" CD writer. When I mount a CD in the "Yamaha"
writer
with "mount -v -r -t iso9660 /dev/sr1 /mnt", I can traverse the file
system
structure of the CD and access the files. But often I can only read
corrupted
files even if the CD is okay. For example, I get a plain ASCII file
containing binary data!

My "/proc/scsi" contains:

        Attached devices:
        Host: scsi0 Channel: 00 Id: 00 Lun: 00
          Vendor: IBM      Model: DCAS-34330W      Rev: S65A
          Type:   Direct-Access                    ANSI SCSI revision:
02
        Host: scsi0 Channel: 00 Id: 01 Lun: 00
          Vendor: TOSHIBA  Model: CD-ROM XM-3801TA Rev: 0207
          Type:   CD-ROM                           ANSI SCSI revision:
02
        Host: scsi0 Channel: 00 Id: 02 Lun: 00
          Vendor: YAMAHA   Model: CRW4416S         Rev: 1.0e
          Type:   CD-ROM                           ANSI SCSI revision:
02

"/proc/scsi/aic7xxx/0" contains:

        Adaptec AIC7xxx driver version: 4.1/3.2
        Compile Options:
          AIC7XXX_RESET_DELAY    : 15
          AIC7XXX_TAGGED_QUEUEING: Disabled
          AIC7XXX_PAGE_ENABLE    : Disabled
          AIC7XXX_PROC_STATS     : Enabled

        Adapter Configuration:
                   SCSI Adapter: Adaptec AIC-7880 Ultra SCSI host
adapter
                                 (AIC-788x chipset)
                       Host Bus: Wide
                        Base IO: 0xd000
                 Base IO Memory: 0xe3000000
                            IRQ: 10
                           SCBs: Used 4, HW 16, Page 16
                     Interrupts: 35613
                  Serial EEPROM: True
           Extended Translation: Enabled
                 SCSI Bus Reset: Enabled
                     Ultra SCSI: Enabled
        Disconnect Enable Flags: 0xffff

My "/proc/devices" contains:

        Block devices:
         2 fd
         8 sd
        11 sr

And after "modprobe sg":

        Character devices:
         1 mem
         ...
        21 sg

Mounting the CD via "mount /dev/sg2 /mnt" failed:

        mount: /dev/sg2 is not a block device

Then I mounted the CD with "mount -v -r -t iso9660 /dev/sr1 /mnt" and
tried to
read the whole CD with "find /mnt -type f | xargs cat > /dev/null".
While the thing was running, no new messages were appended to
"/var/log/warn".

It says in the "CD Writing HOWTO" by Winfried Trmper:

        Please check first if the writer works under other operating
systems.
        Concretely:

              Does the controller recognize the writer as a SCSI device?
              Does the driver software recognize the writer?
              Is it possible to make a CD using the accompanied
software?

        If "it doesn't work" even under other operating systems you have
        a hardware conflict or defective hardware.

Everything works fine with Windows 98. He continues:

        If it works under the other operating system and you use loadlin
        to boot Linux, then that is your problem. Loadlin makes a
warm-boot
        with most of the hardware already initialized and that confuses
the
        Linux-kernel.

So maybe that's my problem! But even when I boot Linux with a boot disk
and
LILO, the CD writer won't work correctly. *sigh*

Who can help me? Aren't there any other people out there, who use the
"Yamaha 4416S"?

        J?rg

--  
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J?rg Afflerbach

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Quote:> Mounting the CD via "mount /dev/sg2 /mnt" failed:

>         mount: /dev/sg2 is not a block device

> Then I mounted the CD with "mount -v -r -t iso9660 /dev/sr1 /mnt" and tried to
> read the whole CD with "find /mnt -type f | xargs cat > /dev/null".

I'm a real newbie, so forgive me if I'm way off the mark, but I noticed
you tried several different commands to mount your 4416s, and none of
them match the one I use:

mount -t iso9660 /dev/scd1 /cdrom1

This works for me. The mount point probably isn't important as long as
it exists, I haven't used the drive to write with under linux yet, but
it reads just fine.

By the way, what is the deal with mounting other drives at /mnt any way
(anyone)? Is this just a matter of style, or is there an important
reason which I have yet to learn? My /dev/scd0 is a Plextor 12/20, which
my instalation (SuSE6.1) set up to mount at /cdrom, so /cdrom1 seemed
natural for the second drive. Likewise there is already a /floppy mount
point so why not a /syquest, an /ntfs, etc. for mounting the various
partitions on my multi boot system?

Hope this might help.

Oh and btw how is your scsai chain terminated?

: I'm a real newbie, so forgive me if I'm way off the mark, but I noticed
: you tried several different commands to mount your 4416s, and none of
: them match the one I use:

: mount -t iso9660 /dev/scd1 /cdrom1

: This works for me. The mount point probably isn't important as long as
: it exists, I haven't used the drive to write with under linux yet, but
: it reads just fine.

As far as I know: Both "/dev/sr1" and "/dev/scd1" point to the same device --
the second CD drive. So I guess, your mount command is equivalent to mine.

: By the way, what is the deal with mounting other drives at /mnt any way
: (anyone)? Is this just a matter of style, or is there an important
: reason which I have yet to learn? My /dev/scd0 is a Plextor 12/20, which
: my instalation (SuSE6.1) set up to mount at /cdrom, so /cdrom1 seemed
: natural for the second drive. Likewise there is already a /floppy mount
: point so why not a /syquest, an /ntfs, etc. for mounting the various
: partitions on my multi boot system?

I myself use the mount points "/floppy", "/cdrom" and "/cdwriter". I think
"/mnt" is just a general mount point for any purpose.

Bye,

        Joerg

--
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J?rg Afflerbach

WWW:    http://www.uni-karlsruhe.de/~un4t/  
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