hello

i recently got a 2500a with a firewire enclosure for my notebook. i am having problems burning dvd-video discs from a previously created VIDEO_TS folder. using veritas drive letter access seems to be fine. here are some of the symptoms:

1. when using nero 6.3.1.6 or recordnow dx, it burns until 73% done; nero comes back with: "error reading data" and recordnow just hangs at the same 73% mark.
2. the VIDEO_TS folder on the hard drive plays fine with windvd. i haven't stripped any of the content as it has the original IFOs, VOBs, etc.
3. in nero 6.3.1.6, i get the same error message at the same spot (73%) for a speed test every single time i run the speed test.
4. the 73% finished nero-burned, dvd+r disk plays fine in the 2500a using windvd until it reaches the 73% mark (skips to main menu). the 73% recordnow-burned dvd+r can not be recognized by the drive.

i read some other threads about people having problems with USB enclosures. they have seemed to remedy the situation by installing it internally, which, alas i can not do. it appears the 1394 controller is on a pci bus. is this the culprit?

nero infotool reports the built-in dvd-rom/cdrw drive as master on secondary IDE channel and the IEEE 1394 device as unknown.

thanks.

btw, here's the nero log:

Windows XP 5.1
IA32
WinAspi: File 'Wnaspi32.dll': Ver=4.60 (1021), size=45056 bytes, created 9/10/1999 1:06:00 PM
ahead WinASPI: File 'C:\Program Files\Ahead\Nero\Wnaspi32.dll': Ver=2.0.1.59, size=160016 bytes, created 12/16/2003 7:18:06 PM
Nero version: 6.3.1.6
Recorder: <_NEC DVD_RW ND-2500A> Version: 1.06 - HA 3 TA 0 - 6.3.1.6
Adapter driver: <> HA 3
Drive buffer : 2048kB
Bus Type : default (0) -> ATAPI, detected: ?
CD-ROM: <MATSHITA UJDA710 >Version: 1.50 - HA 2 TA 0 - 6.3.1.6
Adapter driver: <atapi> HA 2

=== Scsi-Device-Map ===
DiskPeripheral : Toshiba Sm Host Driver 0000 pciSm Port 0 ID 0 DMA: Off
DiskPeripheral : TOSHIBA MK3017GAP atapi Port 1 ID 0 DMA: On
CdRomPeripheral : MATSHITA UJDA710 atapi Port 2 ID 0 DMA: On

=== CDRom-Device-Map ===
MATSHITA UJDA710 E: CDRom0
_NEC DVD_RW ND-2500A F: CDRom1
=======================

AutoRun : 1
Excluded drive IDs:
CmdQueuing : 1
CmdNotification: 2
WriteBufferSize: 74448896 (0) Byte
ShowDrvBufStat : 0
EraseSpeed : 0
BUFE : 0
Physical memory : 511MB (523760kB)
Free physical memory: 206MB (211116kB)
Memory in use : 59 %
Uncached PFiles: 0x0
Use Static Write Speed Table: 0
Use Inquiry : 1
Global Bus Type: default (0)
Check supported media : Disabled (0)

17.4.2004
UDF/ISO compilation
9:43:14 AM #1 Phase 112 File dlgbrnst.cpp, Line 1841
DVD-Video files reallocation started

9:43:14 AM #2 Phase 114 File dlgbrnst.cpp, Line 1841
DVD-Video files reallocation completed (no file modified)

9:43:14 AM #3 Text 0 File Isodoc.cpp, Line 6062
Iso document burn settings
------------------------------------------
Determine maximum speed : TRUE
Simulate : FALSE
Write : FALSE
Finalize CD : TRUE
Multisession : FALSE
Burning mode : DAO
Mode : 1
ISO Level : 1 (Max. of 11 = 8 + 3 char)
Character set : ISO 9660
Joliet :FALSE
Allow pathdepth more than 8 directories : FALSE
Allow more than 255 characters in path : FALSE
Write ISO9660 ;1 file extensions : TRUE

9:43:14 AM #4 Phase 111 File dlgbrnst.cpp, Line 1841
DVD-Video files sorted

9:43:14 AM #5 Text 0 File Reader.cpp, Line 118
Reader running

9:43:14 AM #6 Text 0 File Writer.cpp, Line 124
Writer _NEC DVD_RW ND-2500A running

9:43:14 AM #7 ISO9660GEN -11 File geniso.cpp, Line 3898
First writeable address = 0 (0x00000000)

9:43:14 AM #8 ISO9660GEN -11 File geniso.cpp, Line 3898
First writeable address = 0 (0x00000000)

9:43:15 AM #9 Text 0 File Burncd.cpp, Line 3198
Turn on Disc-at-once, using DVD media

9:43:15 AM #10 Text 0 File DlgWaitCD.cpp, Line 244
Last possible write address on media: 2295103 (510:01.28, 4482MB)
Last address to be written: 2070895 (460:11.70, 4044MB)

9:43:15 AM #11 Text 0 File DlgWaitCD.cpp, Line 249
Write in overburning mode: FALSE

9:43:15 AM #12 Text 0 File DlgWaitCD.cpp, Line 2107
Recorder: _NEC DVD_RW ND-2500A, Media type: DVD+R

9:43:15 AM #13 Text 0 File DlgWaitCD.cpp, Line 410
>>> Protocol of DlgWaitCD activities: <<<
=========================================

9:43:15 AM #14 Text 0 File ThreadedTransferInterface.cpp, Line 813
Setup items (after recorder preparation)
0: TRM_DATA_MODE1 (CTransferItem)
2 indices, index0 (150) not provided
original disc pos #0 + 2070896 (2070896) = #2070896/460:11.71
relocatable, disc pos for caching/writing not required/required, no patch infos
-> TRM_DATA_MODE1, 2048, config 0, wanted index0 0 blocks, length 2070896 blocks [_NEC DVD_RW ND-2500A ]
--------------------------------------------------------------

9:43:15 AM #15 Text 0 File ThreadedTransferInterface.cpp, Line 982
Prepare recorder [_NEC DVD_RW ND-2500A ] 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 4241195008, ISRC ""
DAO layout:
===========
__Start_|____Track_|_Idx_|_RecDep_|_CtrlAdr_
0 | lead-in | 0 | 0x00 | 0x41
0 | 1 | 0 | 0x00 | 0x41
0 | 1 | 1 | 0x00 | 0x41
2070896 | lead-out | 1 | 0x00 | 0x41

9:43:15 AM #16 Phase 24 File dlgbrnst.cpp, Line 1841
Caching of files started

9:43:15 AM #17 Text 0 File Burncd.cpp, Line 4214
Cache writing successful.

9:43:15 AM #18 Phase 25 File dlgbrnst.cpp, Line 1841
Caching of files completed

9:43:15 AM #19 Phase 28 File dlgbrnst.cpp, Line 1841
Speed measurement started

9:43:15 AM #20 Text 0 File ThreadedTransferInterface.cpp, Line 2342
Verifying disc position of item 0 (relocatable, disc pos, no patch infos, orig at #0): write at #0

9:48:42 AM #21 TRANSFER -25 File Reader.cpp, Line 371
Error reading data

9:48:42 AM #22 Text 0 File ThreadedTransfer.cpp, Line 229
all writers idle, stopping conversion

9:48:42 AM #23 Text 0 File dlgbrnst.cpp, Line 1699
Set remaining time: 0:00,000 (0ms) -> OK

9:48:42 AM #24 Phase 30 File dlgbrnst.cpp, Line 1841
Speed measurement failed


Existing drivers:
File 'Drivers\ASPI32.SYS': Ver=4.60 (1021), size=25244 bytes, created 9/10/1999 1:06:00 PM
File 'Drivers\PXHELP20.SYS': Ver=2.02.38a, size=16288 bytes, created 4/18/2002 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 8/18/2001 8:00:00 AM (Adapter driver for src)

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

Can you burn other files without any problems using your drive?
It sounds like the source files in the VIDEO_TS directory on your harddrive are corrupted.
Try copying the source files to a completely different portion of your harddrive and attempting to burn again.
Also, make sure to defragment your harddrive and keep at least a few GBs of free space available on the drive when burning.

ur case may have some problems - mine certainly doesn't come up as unknown device. if at all possible, try and change ur case for one which uses the oxford 911 chipset, as those are the top notch ones.
As Wes suggested, try burning from a different partition. Every time I burn from one particular partition on my system, I get errors at around the 55% mark (variable). Try another partition and see if it helps.

Did You remember to set jumpers on 2500a to master ?? I did at first and had the same problems with unknown device ... When I set jumpers to master and plug in the case again everything worked fine :-)