FreeBSD 12.1 i386 CD #1 image size not compatible with intended medium standard size

[Per Hedeland]

On 2020-06-16 13:37, Polytropon wrote:
> On Tue, 16 Jun 2020 07:30:00 -0400, Jerry wrote:
>> On Tue, 16 Jun 2020 12:27:28 +0200, Polytropon commented:
>>> Due to a system where I can only boot from CD, I downloaded the
>>> FreeBSD 12.1 CD image (disc1.iso). It was not possible to record
>>> this in a standard way to a 700 MB (not 650 MB) blank CD medium
>>> (here: Platinum 700 MB / 80 min).
>>
>> Are you referring to:
>>
>> 1) FreeBSD-12.1-RELEASE-i386-disc1.iso
>> or
>> 2) FreeBSD-12.1-RELEASE-amd64-disc1.iso
>
> As mentioned at the end of the message (discussing image file size),
> the file I used was FreeBSD-12.1-RELEASE-i386-disc1.iso, because the
> system it is intended for is not 64 bit capable, so i386 is what I
> will have to use.
>
> I think the problem here is that 728 MB exceeds the standard that
> says 650 MB and allows 700 MB and, by use of nonstandard tools,
> does not guarantee for anything if you successfully burn 728 MB.
> "Is possible" doesn't imply "will work as expected". :-)

Well, no help for you, but it might be worth noting that
FreeBSD-12.1-RELEASE-amd64-disc1.iso is actually 867(!) MB, and that
https://www.freebsd.org/releases/12.1R/announce.html says:

disc1

    This contains the base FreeBSD operating system. It also supports
    booting into a "livefs" based rescue mode. There are no pre-built
    packages.

    Additionally, this can be written to an USB memory stick (flash
    drive) for the amd64 architecture and used to do an install on
    machines capable of booting off USB drives. It also supports
    booting into a "livefs" based rescue mode. There are no pre-built
    packages.

I.e. a) it is only the base system, no packages that can be removed
(though there are sources and other stuff that *could* be) - and b)
there is *no* claim that it can actually be burnt to a CD!!!

*Perhaps* you could mount the image via md(4), remove/truncate some of
the files in /usr/freebsd-dist, and burn a CD from the result.

--Per

PS From FreeBSD-12.1-RELEASE-amd64-memstick.img:

$ ls -s /mnt/usr/freebsd-dist
total 548264
     4 MANIFEST          76640 kernel-dbg.txz    38592 ports.txz
157568 base.txz          40800 kernel.txz       162400 src.txz
     4 doc.txz           60064 lib32.txz         12192 tests.txz