[syslinux] Problems booting from cd

Ian Leonard ian at smallworld.cx
Thu May 4 08:25:28 PDT 2006

Nazo wrote:
> 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?)

I have just sent out a reply. Sorry for the seemingly double post. I 
thought I had saved a draft of the email prior to getting the mkisofs 
parameters - obviously pressed send instead.

Ian Leonard

Please ignore spelling and punctuation - I did.

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