[Bug 235060] [boot] FreeBSD 12.0 Release DVD and CD will not boot on PowerMac G5 Quad

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=235060

--- Comment #18 from Mark Millard <marklmi26-fbsd at yahoo.com> ---
(In reply to consuli074 from comment #16)

So you do not have any specific evidence of any
specific problem "bit patterns" existing but just
a hypothesis.

I'm not up for such an open-ended activity as
investigating your hypothesis or helping you
do so. If there ever was something already-identified
as something-specific to look at I might do that.

Francis Little reports in comment #17 having
successfully booted from:

FreeBSD-12.0-RELEASE-powerpc-powerpc64-disc1.iso

on a CD on a PowerMac G5 "quad". Also having installed
from it. (This would not eliminate intermittent
problems as a possibility and may indicate a dependence
on what has been installed in the various machines
folks have tried. There is also the question of how
various CDs were produced from .iso files that could
be involved.)

He also reports on later boots needing to set usefdt=1
first --but that is what bugzilla 233863 and the
patches there are about. But the content is not designed
for a non-programmer so it is not clear that going
there would help. But, for reference,

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233863

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