> 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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