@Alkis Georgopoulos,
Thanks for the suggestion.
I added "rmmod tpm".
Unfortunately, it did not really help my situation...
$ sudo update-grub
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Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-5.3.0-51-generic
Found initrd image: /boot/initrd.img-5.3.0-51-generic
Found linux image: /boot/vmlinuz-5.3.0-46-generic
Found initrd image: /boot/initrd.img-5.3.0-46-generic
Adding boot menu entry for EFI firmware configuration
done
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$ sudo nano /etc/grub.d/40_custom
$ sudo update-grub
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Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-5.3.0-51-generic
Found initrd image: /boot/initrd.img-5.3.0-51-generic
Found linux image: /boot/vmlinuz-5.3.0-46-generic
Found initrd image: /boot/initrd.img-5.3.0-46-generic
Adding boot menu entry for EFI firmware configuration
done
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$ cat /etc/grub.d/40_custom
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#!/bin/sh
exec tail -n +3 $0
# This file provides an easy way to add custom menu entries. Simply type
the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
menuentry "Install" {
set isofile="/ubuntu.iso"
rmmod tpm
loopback loop (hd0,2)$isofile
linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=$isofile
noprompt noeject
initrd (loop)/casper/initrd
}
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Prior to this change, I would get a blank screen with a whirring fan.
With the above change, I do see the boot-up log messages.
But, I get a busy box...
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BusyBox v1.301 (Ubuntu 1:1.30.1-4ubuntu4) built-in shell (ash)
Enter 'help' for a list of built-in commands.
(initramfs) Begin: Running /scripts/casper-premount ... done.
Begin: waiting for devs... ... done.
touch /dev/.initramfs/lupin-waited-for-devs: No such file or directory
stdin: Invalid argument
done.
loop: can't get info on device /dev/loop1: No such device or address
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I don't know why it is referencing "loop1" ?
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https://bugs.launchpad.net/bugs/1851311
Title:
loopback command hangs in 2.04 under UEFI
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