I use scsi emulation and usually my dmesg has this:
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
Vendor: SONY Model: CD-RW CRX220E1 Rev: 6YS1
Type: CD-ROM ANSI SCSI revision: 02
sr0: scsi3-mmc drive: 246x/52x writer cd/rw xa/form2 cdda tray
Uniform CD-ROM driver Revision: 3.20
Attached scsi CD-ROM sr0 at scsi0, channel 0, id 0, lun 0
now the last line is gone...

.. and i can't use my cdrw because ..hell .. "it isn't there".Anyone knowing what's this prob about ?

(just to make this clear: my sr0 doesn't apper to be a valid device)
thanks in advance