====== Ubuntu - CD - Get CD device description ======

Use the command **cdrecord -scanbus** as root to scan your SCSI bus to determine the device description. (i.e. 0,4,0).  This will perform a scan and provide results for real SCSI systems or for the virtual SCSI subsystem Linux uses with IDE CD/DVD's.

Examples:

**SCSI CD system:**

<code bash>
cdrecord -scanbus
</code>

returns:

<code bash>
Cdrecord 1.8 (i686-pc-linux-gnu) Copyright (C) 1995-2000 Jorg Schilling
Using libscg version 'schily-0.1'
scsibus0:
	0,0,0	  0) 'SEAGATE ' 'ST36530W        ' '1498' Disk
	0,1,0	  1) 'SEAGATE ' 'ST39173W        ' '6244' Disk
	0,2,0	  2) *
	0,3,0	  3) *
	0,4,0	  4) 'HP      ' 'CD-Writer+ 9200 ' '1.0c' Removable CD-ROM
	0,5,0	  5) *
	0,6,0	  6) *
	0,7,0	  7) *
</code>

----             

**CD/DVD ATA system: **

This will report on your SCSI device name to use when burning a CD.  In this case "ATA".

<code bash>
cdrecord -scanbus
</code>

returns:

<code bash>
Cdrecord-Clone 2.01-dvd (--) Copyright (C) 1995-2004 Jorg Schilling
...
scsidev: 'ATA'
devname: 'ATA'
scsibus: -2 target: -2 lun: -2
Linux sg driver version: 3.5.27
Using libscg version 'schily-0.8'.
cdrecord: Warning: using unofficial libscg version (schily Red Hat-scsi-linux-sg.c-1.83-RH 
scsibus1:
        1,0,0   100) '_NEC    ' 'DVD_RW ND-2510A ' '2.15' Removable CD-ROM
        1,1,0   101) *
        1,2,0   102) *
        1,3,0   103) *
        1,4,0   104) *
        1,5,0   105) *
        1,6,0   106) *
        1,7,0   107) *
</code>


<WRAP info>
  * Linux Kernel 2.2 and 2.4 use SCSI emulation when accessing an IDE/ATAPI CD drive.\\ 
    * Example device reference: dev=0,4,0

  * Linux kernel 2.6 allows one to directly access ATAPI. Prefix the device name with "ATAPI:".\\ 
    * Example device reference: dev=ATAPI:0,4,0

  * To get a list of supported devices: cdrecord dev=HELP\\  
    * i.e.: ATAPI, ATA, RSCSI (remote scsi)
</WRAP>


<WRAP tip>
Device defaults can be found in the configuration file: /etc/cdrecord.conf 

The default speed can be set: CDR_SPEED=4
</WRAP>