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SubjectCD-Changer
Hi *,

I hope this isn't too off-topic.

I got a PIONEER DRM-624X cd-changer with 6 cd-magazine. When I
boot the machine the kernel reports every slot as a seperate
cdrom-drive (/dev/scd0../dev/scd5), ok! But if I try to mount e.g. /dev/scd0, the
changer loads the specified CD waits several seconds, unloads
the CD and then tells me the following story:

# mount -r -t iso9660 /dev/scd0 /cdrom
mount: wrong fs type, bad option, bad superblock on /dev/scd0,
or too many mounted file systems

dmesg:
======
ESP: Total of 1 ESP hosts found, 1 actually in use.
scsi0 : Sparc ESP100A (NCR53C90A)
scsi : 1 host.
Vendor: IBM Model: DORS-32160 Rev: S82C
Type: Direct-Access ANSI SCSI revision: 02
Detected scsi disk sda at scsi0, channel 0, id 0, lun 0
Vendor: PIONEER Model: CD-ROM DRM-624X Rev: 1.03
Type: CD-ROM ANSI SCSI revision: 02
Vendor: PIONEER Model: CD-ROM DRM-624X Rev: 1.03
Type: CD-ROM ANSI SCSI revision: 02
Vendor: PIONEER Model: CD-ROM DRM-624X Rev: 1.03
Type: CD-ROM ANSI SCSI revision: 02
Vendor: PIONEER Model: CD-ROM DRM-624X Rev: 1.03
Type: CD-ROM ANSI SCSI revision: 02
Vendor: PIONEER Model: CD-ROM DRM-624X Rev: 1.03
Type: CD-ROM ANSI SCSI revision: 02
Vendor: PIONEER Model: CD-ROM DRM-624X Rev: 1.03
Type: CD-ROM ANSI SCSI revision: 02
scsi : detected 1 SCSI disk total.
esp0: target 0 [period 200ns offset 15 5.00MHz synchronous SCSI]
SCSI device sda: hdwr sector= 512 bytes. Sectors= 4226725 [2063 MB] [2.1 GB]
sunlance.c:v1.9 21/Aug/96 Miguel de Icaza (miguel@nuclecu.unam.mx)
eth0: LANCE 08:00:20:c0:ff:ee
Partition check:
sda: sda1 sda2 sda3 sda4 sda5 sda6 sda7 sda8
VFS: Mounted root (ext2 filesystem) readonly.
Adding Swap: 93432k swap-space
Swansea University Computer Society IPX 0.34 for NET3.035
IPX Portions Copyright (c) 1995 Caldera, Inc.
Appletalk 0.17 for Linux NET3.035
Swansea University Computer Society IPX 0.34 for NET3.035
IPX Portions Copyright (c) 1995 Caldera, Inc.
Appletalk 0.17 for Linux NET3.035
Detected scsi CD-ROM sr0 at scsi0, channel 0, id 5, lun 0
Detected scsi CD-ROM sr1 at scsi0, channel 0, id 5, lun 1
Detected scsi CD-ROM sr2 at scsi0, channel 0, id 5, lun 2
Detected scsi CD-ROM sr3 at scsi0, channel 0, id 5, lun 3
Detected scsi CD-ROM sr4 at scsi0, channel 0, id 5, lun 4
Detected scsi CD-ROM sr5 at scsi0, channel 0, id 5, lun 5
Disc change detected.
VFS: Disk change detected on device 0b:00
sr_photocd: ioctl error (SONY/PIONEER): 0x28000000
Device not ready. Make sure there is a disc in the drive.
VFS: Disk change detected on device 0b:00
CD-ROM I/O error: dev 0b:00, sector 64
isofs_read_super: bread failed, dev 0b:00 iso_blknum 16 block 32
Device not ready. Make sure there is a disc in the drive.
VFS: Disk change detected on device 0b:00
sr_photocd: ioctl error (SONY/PIONEER): 0x28000000
Device not ready. Make sure there is a disc in the drive.
VFS: Disk change detected on device 0b:00
CD-ROM I/O error: dev 0b:00, sector 64
isofs_read_super: bread failed, dev 0b:00 iso_blknum 16 block 32

This happens with Linux 1.2.x and 2.0.x, on an Intel PC same as on
this little Sparc IPX! Has anyone an idea?

Help appreciated!


Martin

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