Here's a screenshot of the above-described boot error:
https://photos.google.com/photo/AF1QipMO-vL-kcyiORVEZ5P4ydjpdBJwwzzTZ00JuNm1

On Thu, Dec 14, 2017 at 10:04 PM, <pub08g...@gmail.com> wrote:

> > Does anyone have an idea what the difference livecd-iso-to-disk make,
> > compared to isohybrid? If possible, we'd like to installation iso work
> > out of the box on UEFI systems, including new ones...
>
> No, but I have what seems like another data point.  On my Lenovo
> T520 under UEFI, trying to boot the 4.0rc3 installer produces
> similar symptoms: whichever option I choose from the grub menu,
> the screen goes blank briefly (I didn't measure, but probably
> <2sec), then comes back to the grub menu.  Repeat ad nauseam.
>
> But if I try the same thing from EFI Shell (version 1, because my
> UEFI firmware's too old to support version 2), I get this:
>     Read failed for initrd.img: Device error
>     fs1:\EFI\BOOT>        # i.e. it comes right back to the shell prompt
>
> And sure enough, when I try again from grub, I can *sometimes*
> see a very brief flash of purple before the grub menu returns.  I
> suspect that Qubes/Xen is displaying the same message, but then
> grub is clearing the screen too quickly for me to read it.
>
> Details:
>   - Hardware: Lenovo T520, model 4239-CTO (this laptop was bought
>     in 2012, and has been happily running Ubuntu in UEFI mode
>     ever since)
>
>   - BIOS: 8AET56WW (1.36 ) 12/06/2011
>       - I think the UEFI version is 2.0, but not totally sure
>
>   - TPM *disabled* (one thing at a time, y'know?)
>
>   - I'm not using USB, but rather a real DVD+R, burned directly
>     from the (signature-verified) .iso
>
>   - I've verified the DVD media against the original .iso image
>     *after* seeing these symptoms, which suggests it isn't an
>     actual media error
>
> So, two things:
>   - If this is helpful (and it's a solvable problem), awesome!
>
>   - I'd suggest adding a "Hit <ENTER> to continue" (perhaps with
>     timeout) after a failed boot attempt, to keep any error
>     message on screen for a while
>
> > I wonder if Fedora netinst iso (_not_ Live iso) boot on such new
> > hardware, after directly dd-ing it to USB stick. Can you check that?
>
> I already have :-)  Fedora 27 netinst (again, signature-verified
> and burned to optical media) boots successfully.  I aborted the
> installer at its first (language) prompt.  I was't sure which
> Fedora version 4.0rc3 contains, so picked the newest; if you'd
> like me to test an older one, please let me know -- or if you
> need more information (including a reboot to verify the UEFI
> version).
>
>   - Eric
>
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