I'm having a problem writing DVD iso images to DVD-R media. I'm looking for some input on what I am doing wrong and some tips on what to do next. Here is what I have going on so far...

dmesg says
hdc: ATAPI 24X DVD-ROM DVD-R-RAM CD-R/RW drive, 2048kB Cache, UDMA(33)
Uniform CD-ROM driver Revision: 3.20

KInfoCenter says:
Can Write DVD-R         YES
Can Write DVD-RAM   YES

I read this:
http://osdir.com/ml/debian.knoppix/2004-06/msg00067.html
to get this:
growisofs -dvd-compat -Z /dev/hdc=KNOPPIX_V5.1.1DVD-2007-01-04-EN.iso

After making a couple coasters I searched and found tkDVD (http://regis.damongeot.free.fr/tkdvd/) and it shows you the CLI it builds. In this case specifically for burning a DVD images it creates this: growisofs -dvd-compat -use-the-force-luke=tty -Z /dev/dvd=KNOPPIX_V5.1.1DVD-2007-01-04-EN.iso

BTW I got "KNOPPIX_V5.1.1DVD-2007-01-04-EN.iso" via bittorrent using Azureus (twice)

Both the CLI and tkDVD produce output similar to the following during the burn process...

growisofs -dvd-compat -Z /dev/hdc=KNOPPIX_V5.1.1DVD-2007-01-04-EN.iso Executing 'builtin_dd if=KNOPPIX_V5.1.1DVD-2007-01-04-EN.iso of=/dev/hdc obs=32k seek=0'
/dev/hdc: "Current Write Speed" is 8.2x1352KBps.
0/4232019968 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU 0.0% 0/4232019968 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU 0.0% 0/4232019968 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU 0.0% 0/4232019968 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU 0.0% 0/4232019968 ( 0.0%) @0x, remaining ??:?? RBU 100.0% UBU 0.0% 11272192/4232019968 ( 0.3%) @2.4x, remaining 131:03 RBU 100.0% UBU 2.9% 27295744/4232019968 ( 0.6%) @3.5x, remaining 64:11 RBU 99.2% UBU 100.0% 43417600/4232019968 ( 1.0%) @3.5x, remaining 45:01 RBU 100.0% UBU 100.0% 59670528/4232019968 ( 1.4%) @3.5x, remaining 36:07 RBU 100.0% UBU 100.0% 76054528/4232019968 ( 1.8%) @3.6x, remaining 31:52 RBU 100.0% UBU 97.1% 92569600/4232019968 ( 2.2%) @3.6x, remaining 28:19 RBU 100.0% UBU 100.0% 109215744/4232019968 ( 2.6%) @3.6x, remaining 25:47 RBU 100.0% UBU 100.0%
...
4180213760/4232019968 (98.8%) @3.0x, remaining 0:07 RBU 100.0% UBU 100.0% 4194172928/4232019968 (99.1%) @3.0x, remaining 0:05 RBU 99.8% UBU 100.0% 4208132096/4232019968 (99.4%) @3.0x, remaining 0:03 RBU 99.8% UBU 100.0% 4222058496/4232019968 (99.8%) @3.0x, remaining 0:01 RBU 59.4% UBU 100.0%
builtin_dd: 2066416*2KB out @ average 5.1x1352KBps
/dev/hdc: flushing cache
/dev/hdc: updating RMA
/dev/hdc: closing disc

The system that does the burn "sees" the blank DVD-R media before the burn and then doesn't recognize the media after the burn. The system dedicated to booting from Knoppix using Knoppix v5.11 on CD-ROM doesn't boot from the DVD-R at all (tested on 2 different systems).

I'm stumped...

TIA!
rb(no water stains around here)w


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