Joerg
I realize that you probably did mean -vv rather than  -VV, as the later 
generated an enormous amount of debug data.  However since I did run both I am 
providing links to both just in case.
Writing E-CD to ASUS here are the relevant documents:
Debug logs with cdrecord -vv  :  
http://www.dxspots.com/cd/cdrtfe_log-vv.7zDebug logs with cdrecord -VV : 
http://www.dxspots.com/cd/cdrtfe_log_uppercase-VV.7zThe CUE sheet used : 
http://www.dxspots.com/cd/E-CD_test/Test_Files/Large/Special_Cues/Large_minimal.cue
Complete test set and results : http://www.dxspots.com/cd/E-CD_test.7z
Here is the Large_minimal.cue
REM Large-minimal.cue is the minimal cue sheet for the large test wave file.
FILE "..\Large.wav" WAVE
  TRACK 01 AUDIO
    INDEX 01 00:00:00
  TRACK 02 AUDIO
    INDEX 01 05:02:14
  TRACK 03 AUDIO
     INDEX 01 10:30:14
  TRACK 04 AUDIO
    INDEX 01 16:20:01
  TRACK 05 AUDIO
    INDEX 01 24:23:00
  TRACK 06 AUDIO
    INDEX 01 34:54:00
  TRACK 07 AUDIO
    INDEX 01 44:19:01
  TRACK 08 AUDIO
    INDEX 01 48:23:03
Excerpts from cdrtfe_log-vv.txt:
00:50.29: > Start: Disc Image
00:50.29: > "C:\Program Files (x86)\cdrtfe\tools\cdrtools\cdrecord" gracetime=5 
dev=0,0,0 driveropts=burnfree -vv -v -multi -pad -text -dao 
cuefile=/cygdrive/C/Users/Ron_Stordahl/Documents/E-CD_Test/Test_Files/Large/Special_Cues/Large_minimal.cue
01:02.42: > Sending CUE sheet...
01:02.42: >  01 00 00 41 00 00 00 00
01:02.42: >  01 01 00 00 00 00 00 00
01:02.43: >  01 01 01 00 00 00 02 00
01:02.43: >  01 02 00 00 00 05 04 0E
01:02.43: >  01 02 01 00 00 05 04 0E
01:02.45: >  01 03 00 00 00 0A 20 0E
01:02.45: >  01 03 01 00 00 0A 20 0E
01:02.45: >  01 04 00 00 00 10 16 01
01:02.46: >  01 04 01 00 00 10 16 01
01:02.46: >  01 05 00 00 00 18 19 00
01:02.46: >  01 05 01 00 00 18 19 00
01:02.46: >  01 06 00 00 00 22 38 00
01:02.46: >  01 06 01 00 00 22 38 00
01:02.46: >  01 07 00 00 00 2C 15 01
01:02.48: >  01 07 01 00 00 2C 15 01
01:02.48: >  01 08 00 00 00 30 19 03
01:02.48: >  01 08 01 00 00 30 19 03
01:19.06: >  01 AA 01 01 00 37 3A 40
01:19.06: > SAO startsec: -11077
01:19.06: > Writing lead-in...
01:19.06: > Lead-in write time:   21.262s (00:00:21.262)
01:19.25: > Writing pregap for track 1 at -150
01:19.25: > Starting new track at sector: 0
01:49.31: > Track 01:   50 of   50 MB written (fifo 100%) [buf 100%]  10.8x.
01:49.33: > Track 01: Total bytes read/written: 53305728/53305728 (22664 
sectors).
01:49.33: > Starting new track at sector: 22664
02:21.95: > Track 02:   55 of   55 MB written (fifo 100%) [buf 100%]  10.3x.
02:21.96: > Track 02: Total bytes read/written: 57859200/57859200 (24600 
sectors).
02:21.96: > Starting new track at sector: 47264
02:56.76: > Track 03:   58 of   58 MB written (fifo 100%) [buf 100%]  10.8x.
02:56.76: > Track 03: Total bytes read/written: 61709424/61709424 (26237 
sectors).
02:56.78: > Starting new track at sector: 73501
03:44.83: > Track 04:   81 of   81 MB written (fifo 100%) [buf 100%]   9.8x.
03:44.83: > Track 04: Total bytes read/written: 85198848/85198848 (36224 
sectors).
03:44.84: > Starting new track at sector: 109725
04:47.62: > Track 05:  106 of  106 MB written (fifo 100%) [buf 100%]  10.2x.
04:47.62: > Track 05: Total bytes read/written: 111308400/111308400 (47325 
sectors).
04:47.63: > Starting new track at sector: 157050
05:43.84: > Track 06:   95 of   95 MB written (fifo 100%) [buf 100%]  10.5x.
05:43.86: > Track 06: Total bytes read/written: 99668352/99668352 (42376 
sectors).
05:43.86: > Starting new track at sector: 199426
06:08.13: > Track 07:   41 of   41 MB written (fifo 100%) [buf 100%]  10.3x.
06:08.13: > Track 07: Total bytes read/written: 43046304/43046304 (18302 
sectors).
06:08.15: > Starting new track at sector: 217728
06:53.29: > Track 08:   76 of   76 MB written (fifo 100%) [buf 100%]  10.3x.
06:53.29: > WARNING: padding up to secsize (by 1340 bytes).
06:53.29: > Track 08: Total bytes read/written: 80051332/80052672 (34036 
sectors).
06:53.31: > Writing  time:  355.493s (00:05:55.493)
06:53.31: > Average write speed  10.0x.
06:53.31: > Min drive buffer fill was 100%
07:48.58: > Fixating...
07:48.58: > Fixating time:   55.270s (00:00:55.270)
07:48.59: > cdrecord: fifo had 9328 puts and 9328 gets.
07:48.59: > cdrecord: fifo was 0 times empty and 9257 times full, min fill was 
96%.
07:48.59: > BURN-Free was 15 times used.
07:48.59: > 
07:48.61: > Execution completed.   
Note that with the Large_minimal.cue the the message appears:

01:19.25: > Writing pregap for track 1 at -150
01:19.25: > Starting new track at sector: 0
150 frames is 2 seconds.  Did you intend for that to be 'minus 150'?  It seems 
to me it should be 'plus 150'.

My limited understanding is that without a PREGAP statement the default is to 
impose a pregap of 2 seconds of digital silence generated by cdrecord, however 
CD players start playing at index 01 so that 2 seconds is not actually seen by 
a typical cd player.

This is described about half way down this page:  
http://www.pcnineoneone.com/howto/cdburnadv4.html
If one uses the PREGAP statement, it is additive (I am not sure about this!).  
So if I wrote:
PREGAP 00:01:00INDEX 01 00:00:00
The effect would be 1+2 seconds of PREGAP...maybe.
I could try writing with CDRWin and then read the disc using cdrtfe debug data 
proving this one way or the other.
I am just speculating and you are the expert so I hope the data I am providing 
is helpful.
I am hoping that the problems start with the pregap processing, but it seems 
strange the all 9 drives write what appears to be the correct E-CD with CD-RWs, 
but some (too many really) fail with CD-Rs.

Hopefully the answer is to attack this one step at a time.  I will help in any 
way I am able.

Thank you,
Ron Stordahl
   
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