# cdrecord -eject -blank=fast -dev=/dev/cd0a 
Cdrecord-Clone 2.01 (i386-unknown-openbsd4.1) Copyright (C) 1995-2004 Jörg Schilling
scsidev: '/dev/cd0a'
devname: '/dev/cd0a'
scsibus: -2 target: -2 lun: -2
cdrecord: Invalid argument. Cannot open SCSI driver.
cdrecord: For possible targets try 'cdrecord -scanbus'.
cdrecord: For possible transport specifiers try 'cdrecord dev=help'.
# cdrecord -scanbus
Cdrecord-Clone 2.01 (i386-unknown-openbsd4.1) Copyright (C) 1995-2004 Jörg Schilling
cdrecord: No such file or directory. Cannot open SCSI driver.
cdrecord: For possible targets try 'cdrecord -scanbus'.
cdrecord: For possible transport specifiers try 'cdrecord dev=help'.