Error with cdrecord

17 (arthur@thunder) ~/downloads (0)% sudo cdrecord dev=0,0,0 driveropts=burnfree NetBSD-6.0_BETA-i386.iso 
cdrecord: No write mode specified.
cdrecord: Assuming -sao mode.
cdrecord: If your drive does not accept -sao, try -tao.
cdrecord: Future versions of cdrecord may have different drive dependent defaults.
Cdrecord-ProDVD-ProBD-Clone 3.01a06 (i386-unknown-netbsd5.99.60) Copyright (C) 1995-2011 Joerg Schilling
scsidev: '0,0,0'
scsibus: 0 target: 0 lun: 0
Using libscg version 'schily-0.9'.
Device type    : Removable CD-ROM
Version        : 0
Response Format: 2
Capabilities   : 
Vendor_info    : 'hp      '
Identifikation : 'DVDRAM GT20L    '
Revision       : 'DC05'
Device seems to be: Generic mmc2 DVD-R/DVD-RW/DVD-RAM.
Using generic SCSI-3/mmc   CD-R/CD-RW driver (mmc_cdr).
Driver flags   : MMC-3 SWABAUDIO BURNFREE 
Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P RAW/R96R LAYER_JUMP
Starting to write CD/DVD/BD at speed 24 in real SAO mode for single session.
Last chance to quit, starting real write    0 seconds. Operation starts.
cdrecord: WARNING: Drive returns wrong startsec (0) using -150
cdrecord: Input/output error. write_g1: scsi sendcmd: fatal error
CDB:  2A 00 FF FF FF 6A 00 00 1E 00
resid: 61440
cmd finished after 11.251s timeout 200s
write track pad data: error after 0 bytes
BFree: 597 K BSize: 597 K
cdrecord: Input/output error. write_g1: scsi sendcmd: fatal error
CDB:  2A 00 00 00 00 00 00 00 1E 00
resid: 61440
cmd finished after 0.005s timeout 200s
write track data: error after 0 bytes
cdrecord: A write error occured.
cdrecord: Please properly read the error message above.