UEFI ISO boot not working in 12.1 ?

[Warner Losh]

On Wed, Nov 6, 2019 at 2:03 PM Chris Ross <cross+freebsd at distal.com> wrote:

> On Wed, Nov 06, 2019 at 02:17:11PM -0500, Chris Ross wrote:
> >
> > Hi there.  I tried booting FreeBSD-12.1-RELEASE-amd64-disc1.iso on a
> system
> > here, which didn't work, and I found that
> FreeBSD-12.0-RELEASE-amd64-disc1.iso
> > did work on that same system.  [Systems were configured to boot in UEFI
> mode]
> >
> > And continues on from there.   However, the attempt to boot 12.1-RELEASE
> > never loads the loader and allows it to boot.  The console output
> > for 12.1-RELEASE is below.  Can anyone help me figure out if it's
> something
> > I need to do?  How has 12.1 changed w.r.t. 12.0 for UEFI?
>
> More information.  A stable/12 ISO that I built fails in the same way the
> 12.1-RELEASE ISO did.  But, I just grabbed releng/12.0, and built a release
> ISO, and it boots.  So, something seems definately to have changed in the
> way
> the UEFI bits are on the boot ISOs?  Or maybe a change in the loader?
> Is okay in releng/12.0, but broken in 12.1-RELEASE and stable/12.
>
> Let me know what to try next.
>

99% sure it's a change in the loader. Do you have an easy way to put
loader.efi into a 12.0 ISO?

Warner