> I have an external Yamaha CDR400t writer. The problem I have is that if I
> take the writer to another machine and my linux box boots without the
> writer, I cannot use the writer again without rebooting the linux box.
> This does not happen on the Mac, where the writer can be used even if it
> was not present at boot time.
>
> Is there any workaround for this?
Yes, as long as you're willing to take the (slight but non-zero) risk
of plugging the drive into your system's SCSI interface while the
power is on. This will tend to glitch the SCSI lines - if you're
transferring data to/from another SCSI peripheral at the time, you
may garble the data and/or crash your system.
Once you've done this, issue the following command as root:
echo "scsi add-single-device FOO BAR BAZ BIFF" > /proc/scsi/scsi
replacing FOO BAT BAZ BIFF with the host, channel, ID, and LUN of
your SCSI drive. For example, if you've got only one SCSI host
controller with a single channel, and the Yamaha is SCSI ID #5, you
would type
echo "scsi add-single-device 0 0 5 0" > /proc/scsi/scsi
This will cause the system to re-probe this one device address and
(if a device is found) add it to the device tables.
The converse is
echo "scsi remove-single-device FOO BAR BAZ BIFF" > /proc/scsi/scsi
which removes the drive from the system tables and will prevent any
further attempts to access it.
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