On Wed, 19 Jun 2002, Joerg Schilling wrote:
>
> >From [EMAIL PROTECTED] Tue Jun 18 20:25:27 2002
>
> >BTW: reading a CD with sdd or copycd and ide-scsi I always get an error at
> >the end of the data, while with ATAPI I don't. Same kernel read-ahead, I
> >doubt that's the problem, and just reading it with a program I see no
> >problem. Another reason why ATAPI is standard for CD-ROM. Please read this
> >as a comment, not a criticism.
>
> Looks like you compare apples with pears.
I read the same CD on the same hardware with the same application software
(your sdd) and I have changed on the use of IDE-CD or IDE-SCSI. I have
changed only one thing and if you change less than that I can't call it a
comparison.
Using the IDE-CD driver the end of data is found, the file written to disk
is correct. Using IDE-SCSI there is an error trying to read one sector
beyond end of data, but the file written to disk is identical. Using my
own program I not no error in either case, but I'm not trying to do some
fancy queueing of reads to issue one before checking the status of the
previous. No, I didn't say you were doing that, just that I'm not.
> But if you use the same media for testing, the ATAPI CD-ROM drivers are broken.
Everything is the same but the driver, what "media" do you think could be
more "same?"
sdd if=/dev/scd0 of=ide-scsi.iso bs=100k
vs.
sdd if=/dev/hdc of=ide-cd.iso bs=100k
-- rob bogus
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