cdrecord problem: Error trying to open /dev/scd0 exclusively

[Joolz]

Hello everyone,

Cdrecord seems to have problems opening /dev/scd0. In order to use it
as non-root, I followed the man pages:

  chown root /usr/bin/cdrecord
  chmod 4711 /usr/bin/cdrecord

Everything seems to be fine, cdrecord --scanbus gives this:

  scsibus0:
  0,0,0     0) 'PLEXTOR ' 'CD-R   PX-W2410A' '1.02' Removable CD-ROM

but when I try to blank a cdrom '/usr/bin/cdrecord blank=fast
dev=0,0,0' this happens:

  /usr/bin/cdrecord blank=fast dev=0,0,0
  Cdrecord-Clone 2.01a19 (i686-redhat-linux-gnu) Copyright (C) 1995-2003 J�rg Schilling
  scsidev: '0,0,0'
  scsibus: 0 target: 0 lun: 0
  Linux sg driver version: 3.1.25
  Error trying to open /dev/scd0 exclusively ... retrying in 1 second.
  Error trying to open /dev/scd0 exclusively ... retrying in 1 second.
  Error trying to open /dev/scd0 exclusively ... retrying in 1 second.
  Error trying to open /dev/scd0 exclusively ... retrying in 1 second.
  Error trying to open /dev/scd0 exclusively ... retrying in 1 second.
  Error trying to open /dev/scd0 exclusively ... retrying in 1 second.
  Error trying to open /dev/scd0 exclusively ... retrying in 1 second.
  Error trying to open /dev/scd0 exclusively ... retrying in 1 second.
  Error trying to open /dev/scd0 exclusively ... retrying in 1 second.
  Error trying to open /dev/scd0 exclusively ... retrying in 1 second.
  bailing out..

The same happens when I try to write a cdrom. Does anyone know what
goes wrong here? Thanks!

-- 
Fedora Core release 1 (Yarrow) Linux 2.4.22-1.2129.nptl 08:51-08:58