Hi all,
I just became the proud owner of the aforementioned external USB CD-RW drive.
It didn't work out of the box with my 2.4.20 or 2.4.21-pre3 kernels, but a
tip from Ralf Rösch helped me greatly.
He suggested the following addition to unusual_dev.h:
UNUSUAL_DEV( 0x07ab, 0xfc03, 0x0000, 0x9999, "Freecom", "FS-1 USB CD-RW",
US_SC_SCSI, US_PR_BULK, NULL, US_FL_FIX_INQUIRY)
Sure enough, after that change the drive is initialised without errors and
registered with the SCSI subsystem.
However, the device appears as a removable disk, rather than a removable
CD-ROM. I can mount /dev/sda and read from the drive without errors, but even
with sr_mod and sg loaded, nothing shows up under /dev/scd0 or /dev/sg0.
Here's some information I collected:
==========================================================================
% cdrecord -scanbus
Cdrecord 1.11a34 (i686-pc-linux-gnu) Copyright (C) 1995-2002 Jörg Schilling
Linux sg driver version: 3.1.24
Using libscg version 'schily-0.6'
scsibus0:
0,0,0 0) 'Freecom' 'USB FS-1 CD-RW' '1110' Removable Disk
0,1,0 1) *
etc.
==========================================================================
% cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: Freecom Model: USB FS-1 CD-RW Rev: 1110
Type: Direct-Access ANSI SCSI revision: 02
==========================================================================
% cat /proc/scsi/usb-storage-0/0
Host scsi0: usb-storage
Vendor: FREECOM
Product: USB-2 Drive
Serial Number: 17FA11100FW1500531ED36
Protocol: 8020i
Transport: Bulk
GUID: 07abfc03100f01500531ed36
Attached: Yes
==========================================================================
% cat /proc/partitions
major minor #blocks name
8 0 642758 sda
22 0 589040 hdc
3 0 19535040 hda
3 1 45328 hda1
3 2 1 hda2
3 5 2933248 hda5
etc.
==========================================================================
I'm not sure how the device type is identified, but changing 'US_SC_SCSI' to
'US_SC_8020' or 'US_SC_8070' makes no difference. I also tried loading the
scsi modules in a different order. Of course, cdrecord absolutely refuses to
do anything with a device that doesn't look like a CDROM.
Can anyone take a guess at what is going on here?
Any help would be greatly appreciated,
-Steve
--
Steve Purcell
http://advogato.org/person/purcell
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