Burning DVD in FC3

[Gene Heskett]

On Tuesday 23 November 2004 22:23, Michael A. Peters wrote:
>On 11/23/2004 04:01:58 PM, John Summerfield wrote:
>> On Wednesday 24 November 2004 05:43, Gustavo Seabra wrote:
>> > We want to burn the Fedora 3 DVD under FC3. However, the only
>>
>> program
>>
>> > cited in the instructions (X-CD-Roast) says it can't find the
>> > DVD-writer. I saw the waeb page and they have a patch for 2.4.x
>>
>> kernels,
>>
>> > about SCSI emulation, but I don't see anything for 2.6.x. Does
>>
>> anybody
>>
>> > has any suggestions?
>>
>> 2.6 kernels don't use SCSI emulation.
>
>Nitpick point - they can, and AFAIK are the only way to verify the
>md5sum of a burned disc.

Counter nit pick:  I'm not useing the SCSI emulation and I am running 
2.6 kernels, home built, and I can tell k3b to verify the md5sum of 
the burn, no coasters yet.  As root of course.  DMA is on in full 
force for that drive.

>Interesting though - at least for me, it doesn't always work.
>After burning the disk, sometimes using md5sum /dev/scd0 (or using
> dd and piping the output to md5sum) fails with the same I/O error
> that one _always_ gets with ide burning. It's really annoying. For
> some reason, mounting and unmounting the CD usually allows it to
> verify (with ide- scsi) but even then not always.

FWIW, k3b ejects, then reloads the disk before it does the md5sum, 
something to do with re-initializing the drive according to the 
propaganda about it.

>I'm buying an external SCSI burner soon and will see if that is
> better. Since I distribute Linux CDR's I really need a reliable (IE
> script it and know that an error really is an error) way to test
> the burn after the burn. Hopefully going SCSI will do that for me
> better, and not waste so much of my time (I rarely get bad burns,
> but you just never know)

I bought a LITE-ON combined dvd/cdwriter at best buy last spring.  I 
think the combo is the best bet against obsolesence.  Not a real 
speed demon, but so far its outlasted the last 2 cdwriters I've 
screwed into that hole.  It claims 48x cd burns, but for some reason 
it only makes about 30x wide open on a disk rated for 52x burns. Dvd 
burns are 2.5x and have all worked well.

-- 
Cheers, Gene
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Copyright 2004 by Maurice Eugene Heskett, all rights reserved.