Here is my problem I purchased a Iomagic DVD writer about 6 mos ago. Nero Info Tool ID shows it as a BenQ 1620 B7C9.
For the last 6 months it has worked flawlessly. With any media brand. + or - R or RW But they were always standard DVD 4.3 GB size.

I recently purchased some (25) Mini DVD-R discs by Velocity 1.4 GB (3 inch Dia.) When I try to burn an 400 MB DVD (mpg-2) file to this mini disk as a data file to DVD I get a failed burn Actually it never even starts the burn. The drive just spits it out and Nero says
"Could not perform start of Disc-at-once" "burn process faild at 2.4x"

I have upgraded my 1620 to Firmware B7V9 and still can not burn to Mini DVD-R (1.4 GB) disks. Nero
Below is the Nero Log
Thanks in advance for any hints as to my problem. E-mail to IOMagic/BenQ and NERO were very unresposive. One says firmware problem other say software problem and I am wondering if the media is the problem
"Velocity Mini DVD-R 1.4 GB"
Phil

NERO LOG
1a2001010000125040217991

Windows XP 5.1
IA32
WinAspi: -
ahead WinASPI: File 'C:\Program Files\Ahead\Nero\Wnaspi32.dll': Ver=2.0.1.74, size=164112 bytes,

created 10/26/2004 5:35:34 PM
Nero Version: 6.6.0.8 (Nero Express)
Recorder: Version: B7V9 - HA 1 TA 1 - 6.6.0.8
Adapter driver: HA 1
Drive buffer : 2048kB
Bus Type : default (0) -> ATAPI, detected: ATAPI
CD-ROM: Version: B7V9 - HA 1 TA 1 - 6.6.0.8
Adapter driver: HA 1

=== Scsi-Device-Map ===
DiskPeripheral : Maxtor 5T020H2 atapi Port 0 ID 0 DMA: On
DiskPeripheral : Maxtor 4R120L0 atapi Port 0 ID 1 DMA: On
CdRomPeripheral : SONY CD-RW CRX140E atapi Port 1 ID 0 DMA: On
CdRomPeripheral : BENQ DVD DD DW1620 atapi Port 1 ID 1 DMA: On

=== CDRom-Device-Map ===
SONY CD-RW CRX140E E: CDRom0
BENQ DVD DD DW1620 F: CDRom1
=======================

AutoRun : 1
Excluded drive IDs:
WriteBufferSize: 74448896 (0) Byte
ShowDrvBufStat : 0
BUFE : 0
Physical memory : 511MB (523760kB)
Free physical memory: 329MB (337020kB)
Memory in use : 35 %
Uncached PFiles: 0x0
Use Inquiry : 1
Global Bus Type: default (0)
Check supported media : Disabled (0)

7.7.2005
ISO compilation
8:13:37 PM #1 Text 0 File Isodoc.cpp, Line 6172
Iso document burn settings
------------------------------------------
Determine maximum speed : FALSE
Simulate : FALSE
Write : TRUE
Finalize CD : TRUE
Multisession : FALSE
Burning mode : DAO
Mode : 1
ISO Level : 1 (Max. of 11 = 8 + 3 char)
Character set : ISO 9660
Joliet : TRUE
Allow pathdepth more than 8 directories : TRUE
Allow more than 255 characters in path : TRUE
Write ISO9660 ;1 file extensions : TRUE

8:13:37 PM #2 Text 0 File Reader.cpp, Line 127
Reader running

8:13:37 PM #3 ISO9660GEN -11 File geniso.cpp, Line 3293
First writeable address = 0 (0x00000000)

8:13:37 PM #4 Text 0 File Burncd.cpp, Line 3153
Turn on Disc-At-Once, using DVD media

8:13:37 PM #5 Text 0 File DlgWaitCD.cpp, Line 259
Last possible write address on media: 714559 (158:47.34, 1395MB)
Last address to be written: 418175 ( 92:55.50, 816MB)

8:13:37 PM #6 Text 0 File DlgWaitCD.cpp, Line 271
Write in overburning mode: NO (enabled: CD)

8:13:37 PM #7 Text 0 File DlgWaitCD.cpp, Line 2316
Recorder: BENQ DVD DD DW1620, Media type: DVD-R
Disc Manufacturer: -
Disc Application Code: 64, Disc Physical Code: 225

8:13:37 PM #8 Text 0 File DlgWaitCD.cpp, Line 433
>>> Protocol of DlgWaitCD activities: <<<
=========================================

8:13:37 PM #9 Text 0 File ThreadedTransferInterface.cpp, Line 830
Setup items (after recorder preparation)
0: TRM_DATA_MODE1 ()
2 indices, index0 (150) not provided
original disc pos #0 + 418176 (418176) = #418176/92:55.51
relocatable, disc pos for caching/writing not required/ required, no patch infos
-> TRM_DATA_MODE1, 2048, config 0, wanted index0 0 blocks, length 418176 blocks

[BENQ DVD DD DW1620]
--------------------------------------------------------------

8:13:37 PM #10 Text 0 File ThreadedTransferInterface.cpp, Line 1043
Prepare recorder [BENQ DVD DD DW1620] for write in CUE-sheet-DAO
DAO infos:
==========
MCN: ""
TOCType: 0x00; Session Closed, disc fixated
Tracks 1 to 1:
1: TRM_DATA_MODE1, 2048/0x00, FilePos 0 0 856424448, ISRC ""
DAO layout:
===========
__Start_|____Track_|_Idx_|_CtrlAdr_|_RecDep__________
0 | lead-in | 0 | 0x41 | 0x00
0 | 1 | 0 | 0x41 | 0x00
0 | 1 | 1 | 0x41 | 0x00
418176 | lead-out | 1 | 0x41 | 0x00

8:13:37 PM #11 Phase 24 File dlgbrnst.cpp, Line 1832
Caching of files started

8:13:37 PM #12 Text 0 File Burncd.cpp, Line 4040
Cache writing successful.

8:13:37 PM #13 Phase 25 File dlgbrnst.cpp, Line 1832
Caching of files completed

8:13:37 PM #14 Phase 36 File dlgbrnst.cpp, Line 1832
Burn process started at 2.4x (3,324 KB/s)

8:13:37 PM #15 Text 0 File ThreadedTransferInterface.cpp, Line 2609
Verifying disc position of item 0 (relocatable, disc pos, no patch infos, orig at #0): write at #0

8:13:37 PM #16 Text 0 File DVDR.cpp, Line 2194
Recording mode: Sequential Recording Mode

8:13:37 PM #17 Text 0 File Mmc.cpp, Line 21235
Set BUFE: Seamless Link -> ON

8:13:37 PM #18 Text 0 File DVDR.cpp, Line 2340
Start write address at LBA 0
DVD high compatibility mode: Yes

8:13:38 PM #19 Text 0 File Cdrdrv.cpp, Line 8430
---- DVD Structure: Physical Format Information (00h) ----
Layer: 0, Address: 0 (0 h), AGID: 0; Length: 2050
Book Type: DVD-R (2), Part Version: 5
Disc Size: 80 mm, Maximum Rate: (F h)
Number of Layers: 1, Track Path: Parallel Track Path (PTP), Layer Type: recordable
Linear Density: 0,267 um/bit, Track Density: 0,74 um/track
Starting Physical Sector Number of Data Area: 30000 h (DVD-ROM, DVD-R/-RW,

DVD+R/+RW)
End Physical Sector Number of Data Area: 0 h
End Sector Number in Layer 0: 0 h (LBN: FFFD0000 h, 4193920 MB)
Data in Burst Cutting Area (BCA) does not exist
Start sector number of the current Border-Out: 0 h
Start sector number of the next Border-In: 0 h
Media Specific [16..63]:
00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................

8:13:38 PM #20 SCSI -1046 File Cdrdrv.cpp, Line 1181
SCSI Exec, HA 1, TA 1, LUN 0
Status: 0x04 (0x01, SCSI_ERR)
HA-Status 0x00 (0x00, OK)
TA-Status 0x02 (0x01, SCSI_TASTATUS_CHKCOND)
Sense Key: 0x05 (KEY_ILLEGAL_REQUEST)
Sense Code: 0x30
Sense Qual: 0x00
CDB Data: 0x53 0x00 0x00 0x00 0x00 0x00 0x06 0x61 0x80 0x00 0x00 0x00
Sense Data: 0x70 0x00 0x05 0x00 0x00 0x00 0x00 0x12
0x00 0x00 0x00 0x00 0x30 0x00

8:13:38 PM #21 CDR -1207 File DVDR.cpp, Line 4772
Book Type automatically set to: Current recorder setting

8:13:38 PM #22 CDR -1046 File ThreadedTransferInterface.cpp, Line 1765
Illegal disc

8:13:38 PM #23 TRANSFER -27 File ThreadedTransferInterface.cpp, Line 1765
Could not perform start of Disc-at-once

8:13:38 PM #24 Phase 38 File dlgbrnst.cpp, Line 1832
Burn process failed at 2.4x (3,324 KB/s)


Existing drivers:
File 'Drivers\CDRALW2K.SYS': Ver=7.0.1.77 , size=24576 bytes, created 5/9/2004 7:28:22 PM
File 'Drivers\PXHELP20.SYS': Ver=2.02.62a, size=20016 bytes, created 10/28/2003 2:02:00 AM

(Prassi/Veritas driver for win 2K)
File 'Drivers\atapi.sys': Ver=5.1.2600.0 (XPClient.010817-1148), size=86656 bytes, created 8/23/2001

12:00:00 PM (Adapter driver for rec)

Registry Keys:
HKLM\Software\Microsoft\Windows NT\CurrentVersion\WinLogon\AllocateCDROMs : 0 (Security

Option)

Use DVDIdentifier to read the media id.

Thanks for reply
I ran the DVD Identify and this was result

----------------------------------------------------------------------------
Unique Disc Identifier : [DVD-R:NO_ID_PRESENT]
----------------------------------------------------------------------------
Disc & Book Type : [DVD-R] - [DVD-R]
Manufacturer Name : [Manufacturer Not Found In Database]
Manufacturer ID : [Not Present On Disc]
Blank Disc Capacity : [714,560 Sectors = 1.46 GB (1.36 GiB)]
----------------------------------------------------------------------------
** INFO : Drive = BENQ DVD DD DW1620 [FW B7V9]
** INFO : Write Capabilities = DVD+R DVD+R-DL DVD+RW
** INFO : Write Capabilities = DVD-R DVD-RW
** INFO : Disc = [DVD-R:NO_ID_PRESENT]
** INFO : Reference Speed : 1x DVD = 1385 kBps
** INFO : An Writeable Disc Is Recommended For Accurate Results
** INFO : Write Speeds (Supported By This Drive On This Disc) Listed Below

** INFO : GET PERFORMANCE Write Speed Descriptor(s)
Descriptor #1 = 3324 kBps ( 2.40x) - [CLV/Non-Pure CAV]

** INFO : MODE SENSE Write Speed Descriptor(s) [Legacy Command]
** WARNING : MODE SENSE Is Obsolete And Not Always Properly Supported
Descriptor #1 = 3324 kBps ( 2.40x) - [CLV/Non-Pure CAV]
----------------------------------------------------------------------------
** INFO : Hex Dump Of 'Media Code'-Block Listed Below
** INFO : 4-Byte Header Preceding 'Media Code'-Block Discarded
** INFO : Format 0Eh - Pre-Recorded Information In Lead-In
0000 : 01 40 e1 ff 21 8c 50 00 02 7a 0c 15 77 78 90 00 .@..!.P..z..wx..
0010 : 03 00 00 00 00 00 00 00 04 00 00 00 00 00 00 00 ................
0020 : 05 cc c0 00 00 00 01 00 00 00 00 00 00 00 00 00 ................
0030 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0040 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0050 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0060 : 00 00 00 00 00 00 00 00 00 00 ..........

** INFO : Hex Dump Of 'Control Data Zone'-Block Listed Below
** INFO : 4-Byte Header Preceding 'CDZ'-Block Discarded
** INFO : Format 10h - Physical Format Information Of Control Data Zone
0000 : 25 1f 02 00 00 03 00 00 00 0d e7 3f 00 00 00 00 %..........?....
----------------------------------------------------------------------------
[ DVD Identifier - http://DVD.Identifier.CDfreaks.com ]
----------------------------------------------------------------------------

B7C9 must be an old firmware as i havent seen this up for download upgrade to B7T9(some people say this is the best still) or B7V9 (latest)

It could be the media as there doesnt seem to be any Manufacturere information at all not even a MID code which is strange.

I have upgraded my firmware to B7V9 for this run. No change in results
The media is labeled
VELOCITY Mini DVD-R 1.4 GB for Camcorder and PC
Label states Disc conforms to General Version 2 what ever that means ?

At least media without any media code id is not expected to give good results. Hard to say if this is is caused by possible bad/missing support for mini DVDs, the missing MediaID, possible non standard conform media or Nero. Maybe you could try to burn it on a different burner to see what happens.

I do not have another internal burner but I do have a stand alone DVD recorder and it also rejects the disc as "invalid disc" So I guess if a disc does not have a Media Code ID any burner or software can not deal with it.
I think I will try to return the discs to Amazon and see if they will exempt them from their 30-day limit policy. I would like to contact VELOCITY who ever they are and give them this info.
Anyway thanks for looking at the problem