I have a Yamaha 2100 firewire cd-burner that my system will recognize as being present, but will not mount. I have edited my fstab file to include the line

/dev/sr0 /media/cdrw0 udf,iso9660 ro,user,noauto 0 0

and I created a mount point for cdrw0 in /media.

For whatever reason it has shown up as "CD-RW 1" when clicking on Computer from the Places menu. It also shows up in Device Manager as "2100IX", but this is all it really says about it. The Device Manager also recongnizes my firewire card, but strangely there are a few "unknown device" listings between the card and the device.

When I try to mount the device, I get an error message that /dev/sr0 does not exist, and indeed there is no sr0 listed in the /dev directory. To see if it is listed as something else, I entered "tail -f /var/log/syslog", and received the following output:

Apr 24 17:02:30 localhost kernel: ohci1394: fw-host0: SelfID received, but NodeID invalid (probably new bus reset occurred): 0000FFC0
Apr 24 17:02:39 localhost kernel: ieee1394: Node added: ID:BUS[0-00:1023] GUID[00a0de01000132f0]
Apr 24 17:02:39 localhost kernel: ieee1394: Node changed: 0-00:1023 -> 0-01:1023Apr 24 17:02:43 localhost kernel: SCSI subsystem initialized
Apr 24 17:02:44 localhost kernel: sbp2: $Rev: 1219 $ Ben Collins <bcollins@debian.org>
Apr 24 17:02:44 localhost kernel: scsi0 : SCSI emulation for IEEE-1394 SBP-2 Devices
Apr 24 17:03:04 localhost kernel: ieee1394: sbp2: Error logging into SBP-2 device - login timed-out
Apr 24 17:03:04 localhost kernel: sbp2: probe of 00a0de01000132f0-0 failed with error -16
Apr 24 17:03:04 localhost ieee1394.agent[5571]: sbp2: loaded successfully

My googling turned up the rescan-scsi-bus.sh script as a possible solution to the "error -16" message. But when I tried running it I received the message "Error: SCSI subsystem not active". I loaded the ide-scsi module and tried it again, and got "No SCSI host adapters found in sysfs". I don't know if this could be related to my problem or not.

Any suggestions?

I've learned some additional info that may help. It turns out the scd device blocks (and the sr sym links) were in my .dev file (which is normally hidden) instead of my regular dev file. I moved scd0 and sr0 from /.dev to /dev. When I tried to mount my cd burner, instead of being told that scd0 (or sr0) does not exist, I was then told that it "is not a valid block device". I checked the properties of scd0, and it seemed similar to my fd0 file regarding permissions and attributes.

I then tried rebooting my system, and my scd0 and sr0 files were no longer in /dev. Nor were they in /.dev. So I had to recreate them using MAKEDEV.

So the issues seem to be as follows (as far as this newb can tell):

1. Why do scd0/sr0 not show up in my /dev file upon editing my fstab and connecting the device?
2. When I create scd0/sr0 files in /dev, why do I get the error message that it is not a valid device?
3. Why do the scd0/sr0 device blocks disappear upon reboot?

Also, if it helps, my lspci is as follows:
0000:00:00.0 Host bridge: OPTi Inc. 82C701 [FireStar Plus] (rev 32)
0000:00:01.0 ISA bridge: OPTi Inc. 82C700 [FireStar] (rev 31)
0000:00:0a.0 CardBus bridge: Texas Instruments PCI1131 (rev 01)
0000:00:0a.1 CardBus bridge: Texas Instruments PCI1131 (rev 01)
0000:00:12.0 VGA compatible controller: Neomagic Corporation NM2160 [MagicGraph 128XD] (rev 01)
0000:00:13.0 USB Controller: OPTi Inc. 82C861 (rev 10)
0000:00:14.0 IDE interface: OPTi Inc. 82C825 [Firebridge 2] (rev 30)
0000:01:00.0 FireWire (IEEE 1394): Texas Instruments TSB12LV23 IEEE-1394 Controller

Any help would be much appreciated.