[syslinux] Problems booting from cd

[Nazo]

On 5/4/06, Ian Leonard <ian at smallworld.cx> wrote:
> Arwin Vosselman wrote:
> > Hello,
> >
> > On Tue, 2 May 2006 16:11:33 -0500, Nazo wrote:
> >
> >> By the way, just so we get this question out of the way, have you
> >> tested different media?  This is a problem mainly with DVDs since
> >> today's burners still have considerably less burn quality than seems
> >> reasonable (especially the cheap ones, but, even some of the expensive
> >> ones really aren't as high quality as the price tag implies.
> >
> > A good rule of thumb hereto seems to be, never to burn at a higher
> > speed than half of the max. speed of the drive or of the rawling,
> > whichever figure is smaller.
> >
> > Example:
> >  drive: max. 48x
> >  rawling: max. 24x
> >  burn at 12x
>
> Okay, thanks for that. I have actually already tried burning at x4. I
> have also tried 3 different writers. Nothing helps.
>
> Currently I have one cd that will boot on 2 out of 7 machines. There is
> a mixture of motherboards, but these are machines that we use all the
> time and I haven't had any problems before.
>
> I have also tried yet more makes of cd (I think that's 6 types now).
>
> This is driving me insane.
>
>
> --
> Ian Leonard
>
> Please ignore spelling and punctuation - I did.
>
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>

Well, first of all, bear in mind that the name put on the top of the
CDR has absolutely no bearing whatsoever on what the CDR actually is. 
Unfortunately, next to no one actually makes their own media, and the
quality control on which dyes are selected seems to be less than
satisfactory (in the DVD+-R field, this really shows and it's really
making people like me suffer.)

That said, if you tried many different medias, then the issue is
probably not readability quality.  It sounds to me like something
subtle has indeed gotten changed.  Something which certain systems can
compensate for, but, others cannot.

Again, could you post your mkisofs parameters for us?  Or, if you are
using another program, can you give us as many relevant settings as
possible?  I know it's a bit much, but, maybe you'll get lucky and
someone will spot something.  (Ok, probably not, but, it's worth a
shot isn't it?)