Re: Why is the DVD image so large?

On Sat, 1 Nov 2025 13:21:38 -0400
Dennis Clarke <dclarke@blastwave.org> wrote:

> On 11/1/25 11:46, Graham Perrin wrote:
> > On 01/11/2025 14:06, Dennis Clarke wrote:
> > 
> >> … the dvd1 image seems a tad large for an actual DVD media. I think
> >> this has been the case for a very long time now.  …
> > 
> > 
> >> From <https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=257347#c10>:
> > 
> >> … dvd1 image is also almost at its limit, which is 4.7GB for single 
> >> layer DVD (FreeBSD 14 dvd1 is 4541104128 bytes=4.54 GB).
> > 
> > 
> > 5150257152 does seem to exceed this.
> > 
> 
> -------------------------------------------------------------------
>   Graham Perrin 2025-11-01 15:55:05 UTC
> 
> <https://www.freebsd.org/where/#choose-image> describes DVD format.
> 
> Bug 284666 (too large) was closed as a duplicate of bug 253483 (too 
> large for single DVD) which was also closed (works as intended).
> --------------------------------------------------------------------
> 
> So?  Works as intended. A DVD image that can never be on a DVD.
> 
> OKay then.
> 
> Today seemed like a good day to try an install onto a chunk of hardware
> and actually create an installation DVD. I went with the much smaller
> disk1.iso image and that works just fine. Maybe the oversized DVD file
> has no reason to exist.
> 
> 
> -- 
> --
> Dennis Clarke
> RISC-V/SPARC/PPC/ARM/CISC
> UNIX and Linux spoken

I've never tried, so I could be confusing / mis-understanding.
Isn't Double Layer (DL) DVD handle 2x of normal (single layer) DVDs?
If it's simply true, there can be an installation DVD media.

BTW, it would be worth considering to split legacy and pkgbase
version of installation media, that legacy one does just as usual
and pkgbase one does pkgbasify as the start point.
It would be less confusing for users, IMHO.

-- 
Tomoaki AOKI    <junchoon@dec.sakura.ne.jp>