I have a very similar issue. Several times I have tried to record to different drives via 1394, only to get into a state where the DVD recorder is just sitting there.
I have made several coasters with SPTI. I decided to try a different DVD recorder, from a DVR-105, to a BTC 1108IM, connected via oxford 911 IDE to Firewire Bridgeboard, connected to 1394 port on my Asus P5AD2-E Premium Motherboard, using the Unibrains 3.2 Firewire driver 3.2.
Then I tried with the Patin - Couffin I/O interface, with a little better success, meaning, it doesn't fail right away, but tries about 5 times... and voila, nothing.
Here is my log that I have.
I 20:57:27 ImgBurn Version 2.1.0.0 started!
I 20:57:27 Microsoft Windows XP Professional (5.1, Build 2600 : Service Pack 2)
I 20:57:27 Initialising SPTI...
I 20:57:27 Searching for SCSI / ATAPI devices...
I 20:57:28 Found 1 CD-RW, 3 DVD-ROMs, 1 DVD-RW and 2 DVD?RWs!
W 20:57:55 I/O Interface has been changed!
I 20:57:55 Shutting down SPTI...
I 20:57:55 Initialising Patin-Couffin...
I 20:57:55 Patin-Couffin - VSO Software - Version 1.36.0.0 - Internal Revision 36
I 20:57:55 Searching for SCSI / ATAPI devices...
I 20:57:56 Found 1 CD-RW, 3 DVD-ROMs, 1 DVD-RW and 2 DVD?RWs!
I 20:59:28 Operation Started!
I 20:59:28 Source File: G:\2BURN\PS2\SPONGEEYETOY\SPONGEEYETOY.mds
I 20:59:28 Source File Sectors: 851,648 (MODE1/2048)
I 20:59:28 Source File Size: 1,744,175,104 bytes
I 20:59:28 Source File Volume Identifier: 2
I 20:59:28 Source File Application Identifier: PLAYSTATION
I 20:59:28 Source File Implementation Identifier: DVD-ROM GENERATOR
I 20:59:28 Source File File System(s): ISO9660, UDF (1.02)
I 20:59:28 Destination Device: [16:0:0] DVDRW IDE1108 B330 (P:) (1394)
I 20:59:28 Destination Media Type: DVD-R (Disc ID: TYG02) (Speeds: 4x, 6x, 8x)
I 20:59:28 Destination Media Sectors: 2,298,496
I 20:59:28 Write Mode: DVD
I 20:59:28 Write Type: DAO
I 20:59:28 Write Speed: 8x
I 20:59:28 Link Size: Auto
I 20:59:28 Test Mode: No
I 20:59:28 BURN-Proof: Enabled
I 20:59:29 Filling Buffer...
I 20:59:33 Writing LeadIn...
W 20:59:36 Failed to Write Sectors 0 - 31 - No Additional Sense Information
W 20:59:36 Retrying (1 of 20)...
W 20:59:38 Retry Failed - No Additional Sense Information
W 20:59:38 Retrying (2 of 20)...
W 20:59:41 Retry Failed - No Additional Sense Information
W 20:59:41 Retrying (3 of 20)...
W 20:59:45 Retry Failed - No Additional Sense Information
W 20:59:45 Retrying (4 of 20)...
W 20:59:49 Retry Failed - No Additional Sense Information
W 20:59:49 Retrying (5 of 20)...
any Ideas would be greatly helpful.