[FUGSPBR] New cdboot ISO available (fwd)

[Edson Brandi]

Bom dia

Estou redirecionando a mensagem para a lista pois acho que seria
importante testarmos o novo sistema do cdboot e dar um retorno ao Core.
Eu vejo inumeras vantagens no novo sistema, mas a principal sera que não
teremos mais uma limitação quanto ao tamanho do kernel ao gerarmos um CD
bootavel, hoje por exemplo o kernel usado no liveCD esta limitado a 2.5
Mb, e consequentemente nao tem suporte aos mesmos dispositivos que o
kernel generico... Se o novo sistema funcionar, essa limitação vai deixar
de ocorrer...

[ ]'s Edson
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---------- Forwarded message ----------
Date: Thu, 10 Jan 2002 01:59:47 -0800 (PST)
From: John Baldwin <jhb em FreeBSD.ORG>
To: stable em FreeBSD.ORG, qa em FreeBSD.ORG
Subject: New cdboot ISO available

A new experimental CD bootstrap was recently added to -stable for the i386
architecture that allows the full contents of the CD to be used when booting.
The method we currently uses relies on the BIOS emulating a floppy drive from a
floppy image file on the CD.  This limits the size of the kernel that we can
boot off of.  The new CD bootstrap allows a full GENERIC kernel to be used when
booting off of a CD, allowing more drivers to work out of the box.  However,
not all BIOS's that support the older method support this newer method of CD
booting.

The release engineering team would like feedback as to roughly how many
machines do not work with the new bootstrap utility as well as how many
machines do work.  If most machines work with the new bootstrap, then we may
switch to using the new bootstrap on the release ISO images.

Note that this only affects booting directly from the CD.  Booting from
floppies and then installing off of the CD will work the same with both images.

The cdboot image can be found at
ftp://releng4.freebsd.org/pub/FreeBSD/releases/i386/ISO-IMAGES/4.5-RC1-cdboot.iso

The MD5 checksum of the image is:
MD5 (4.5-RC1-cdboot.iso) = 294c50cdfe77f51b8224ae9679afeabf

This new bootstrap utility is used on Windows NT 4, Windows ME, and Windows
2000 CD's (and probably Windows XP CD's), so if your system has a
'Designed for' sticker featuring one of those operating systems, it will
probably work with cdboot.

Please test this ISO and provide feedback to the -stable or -qa lists thanks.

RC1 x86 cdboot Errata :

  1. The kernel configuration tool USERCONFIG does not currently work on the
     cdboot ISO.

  Thanks!

  - The FreeBSD 4.5 Release Engineering Team


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