dvdrecord problems - pioneer dvr-105bk, lg gsa-4040b w/dvd-rw disc

[mbest at pendragon.org]

I'm not that familiar with DVD burning, but here is what I tried to make 
myself a dvd using a Verbatim dvd-rw disc with both the pioneer and lg 
writers I get an error:
Track 01:   0 MB written.dvdrecord: Input/output error. write_g1: scsi
sendcmd: no error

I get a similar error with cdrecord-prodvd too.

Any help would be appreciated, I have shortened the output for brevity.

-Mike

mkisofs -r test.tar.gz | dvdrecord -dao -v fs=6m speed=2 dev=0,0 -

dvdrtools v0.1.4
dvdrecord: Warning: using inofficial version of libscg (bero-0.5a
'@(#)scsitrans p.c     1.81 01/04/20 Copyright 1988,1995,2000 J.
Schilling').
dvdrecord: Warning: using inofficial libscg transport code version
~
Vendor_info    : 'PIONEER '
Identifikation : 'DVD-RW  DVR-105 '
Revision       : '1.30'
Supported modes: PACKET SAO
Track 01: data  unknown length
Total size:       0 MB (00:00.00) = 0 sectors
Lout start:       0 MB (00:02/00) = 0 sectors
Current Secsize: 2048
  ATIP start of lead in:  -150 (00:00/00)
Disk type:    unknown dye (reserved id code)
Manuf. index: -1
Manufacturer: unknown (not in table)
dvdrecord: WARNING: Total disk size unknown. Data may not fit on disk.
~
Starting to write CD/DVD at speed 2 in write mode for single session.
dvdrecord: WARNING: Drive returns wrong startsec (0) using -150
Starting new track at sector: 0
Track 01:   0 MB written.dvdrecord: Input/output error. write_g1: scsi
sendcmd: no error
CDB:  2A 00 00 00 00 1F 00 00 1F 00
status: 0x2 (CHECK CONDITION)
Sense Bytes: 70 00 05 00 00 00 00 0E 00 00 00 00 21 02 00 00
Sense Key: 0x5 Illegal Request, Segment 0
Sense Code: 0x21 Qual 0x02 (logical block address out of range) [No
matching qua lifier] Fru 0x0
Sense flags: Blk 0 (not valid)
cmd finished after 0.006s timeout 200s
~
write track data: error after 63488 bytes
Sense Bytes: 70 00 00 00 00 00 00 0E 00 00 00 00 00 00 00 00 00 00