Не пойму, программная проблема или аппаратная

Как уже говорилось, я купил DVD RW NEC 3540A. Записываю диск (5 фильмов) под рутом:

root@home video # dvdrecord -ignsize speed=12 dev=/dev/hdc video.iso
dvdrtools v0.2.1
Portions (C) 2002-2005 Ark Linux <bero@arklinux.org>
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with
this program; see the file COPYING. If not, write to the Free Software
Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
Based on:
Cdrecord 1.11a15 (i686-pc-linux-gnu) Copyright (C) 1995-2001 J&#246;rg Schilling
scsidev: '/dev/hdc'
devname: '/dev/hdc'
scsibus: -2 target: -2 lun: -2
Scanning device, b=2
Linux sg driver version: 3.5.27
Using libscg version 'bero-0.5a'
dvdrecord: Warning: using inofficial version of libscg (bero-0.5a '@(#)scsitransp.c 1.81 01/04/20 Copyright 1988,1995,2000 J. Schilling').
Device type : Removable CD-ROM
Version : 0
Response Format: 2
Capabilities :
Vendor_info : '_NEC '
Identifikation : 'DVD_RW ND-3540A '
Revision : '1.01'
Device seems to be: Generic mmc2 DVD.
Using generic SCSI-3/mmc CD-R driver (mmc_cdr).
Driver flags : SWABAUDIO BURNFREE
Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P RAW/R96R
dvdrecord: WARNING: Data may not fit on current disk.
dvdrecord: Notice: Overburning active. Trying to write more than the official disk capacity.
Starting to write CD/DVD at speed 8 in write mode for single session.
Last chance to quit, starting real write in 0 seconds. Operation starts.
Track 01: Total bytes read/written: 4402020352/4402020352 (2149424 sectors).
dvdrecord: Success. close track/session: scsi sendcmd: no error
CDB: 5B 00 02 00 00 00 00 00 00 00
status: 0x2 (CHECK CONDITION)
Sense Bytes: 70 00 05 00 00 00 00 0A 00 00 00 00 72 03 00 00
Sense Key: 0x5 Illegal Request, Segment 0
Sense Code: 0x72 Qual 0x03 (session fixation error - incomplete track in session) Fru 0x0
Sense flags: Blk 0 (not valid)
cmd finished after 0.001s timeout 480s
cmd finished after 0.001s timeout 480s
root@home video # mount /mnt/dvd
mount: wrong fs type, bad option, bad superblock on /dev/hdc,
missing codepage or other error
In some cases useful info is found in syslog - try
dmesg | tail or so