Re: How does the bookworm amd64 netinst 738MB iso fit into a 700MB cd-r?
On Mon, 19 Jun 2023 05:51:09 +0800
siso <ssmcmlxx+debianuser@gmail.com> wrote:
> Hi,
>
> On Mon, Jun 19, 2023 at 3:32 AM Thomas Schmitt <scdbackup@gmx.net>
> wrote:
> >
> > You ran into a known bug of cdrskin which will be fixed by version
> > 1.5.6. It did not even try to burn more than the official number of
> > blocks.
> >
> > Nevertheless it most probably would not have worked, because 36 MiB
> > of overburning is just too much for a "700 MB" CD.
>
> The bug saved my drive fortunately. Yay for that.
>
> > > And there it went, one good cd. FATAL indeed.
> >
> > Sorry for that.
>
> Don't worry about it. It was my poor attempt at tongue-in-cheek humour
> :). Just lost one CD-R. The drive is still working fine, i think.
>
> > After fixing option -force i added quite some warning to the man
> > page of cdrskin:
> >
> > -force
> > Assume that the user knows better in situations when cdrskin
> > or libburn are refusing because of concerns about drive or media
> > state.
> > Caution: Use option -force only when in urgent need.
> > ...
> > First consider to use a medium with more capacity rather
> > than trying to overburn a CD.
> >
> > There are "800 MB"/"90 minutes" CD-R which could take the ISO.
> >
> > One reason for being able to overburn at all are "900 MB"/"100
> > minutes" CD-R media. They cannot announce their full capacity to
> > the drive, because together with the wasteful lead-in and lead-out
> > areas they exceed the addressing limit of 100 minutes.
>
> I see what i missed. I had no idea that 800MB or even 900MB CD-R
> existed. Have only seen 700MB CD-R. Which explains my disbelief that
> Debian would make a cd iso that couldn't fit into a standard cd. My
> bad. But still it is a surprise to me that nobody thought this
> deserved a mention in the release notes. I wonder if we are seeing the
> last of CD-R as a Debian install medium. Wait, there is still the mini
> iso. Ha, CD-R will live on. :)
>
> > Have a nice day :)
>
> I appreciate the detailed reply very much. Thank you for taking the
> time. You have a nice day too.
>
Just a thought: Knoppix has never considered 700MB much of a limit.
"Because of its transparent decompression, up to 2 gigabyes of
executable software can be present on a CD, and up to 10GB on a
single-layered DVD."
https://www.knopper.net/knoppix-info/index-en.html
--
Joe
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