Help! Unable to boot from cdrom=ubuntu.iso

No window opens up so there’s no user output at all.
I tried to boot from an appvm and a standalone. Tried HVM, PVM, Nothing shows up.

Without knowing exactly what you tried it is impossible to say what’s
going wrong.
Open the settings for your standalone:
make sure you have adequate memory, uncheck “Include in memory
balancing”, set Kernel to “provided by qube”, and Mode to “HVM”.

Open a terminal in dom0, and run:
replacing STANDALONE with the name of your standalone,
QUBE with the name of the qube which holds the ISO image,
PATH_TO_ISO with the full path to the iso on QUBE.

Observe the output.
Report back.

I also am having this problem.

I followed your instructions and this what the journalclt says.

However, despite it saying that there wasn’t enough memory, there was.
8gb ram. 100gb storage (50sys,50priv). 4 vcpu.

Hi @JoShmoe
Thanks for summarising the screenshot - I wish more users followed your

8GB is more than enough RAM to boot the Ubuntu iso.
You dont say what your system RAM is, or how many qubes you have
running. When you create an HVM like this, it does not use memory
balancing - this means that you have to have 8GB free memory when you
try to boot.
I would try reducing the RAM allocation to 4GB, and closing some of the
open qubes to free up memory.

I never presume to speak for the Qubes team. When I comment in the Forum or in the mailing lists I speak for myself.

I am certain I didn’t have any extra qubes running at the time. However, I’ll try again soon following your instructions.

My system has 12gb of available ram.

Why the disclaimer?

This was the issue. I had a lot going on, in general, and probably overlooked how much of my CPU was being used at the time. It was my first attempt at booting ubuntu when I visited the forum to see if others had run into complications.

I will say however, I did not use HVM. I was experimenting with various settings. And I just so happened to get a PVH running first. I believe is using the debian-11 template as a standalone.

EDIT: I discovered that it wasn’t ubuntu running, just the debian-11 template. I have however, booted up a proper ubuntu uses the methods suggested by unman.

I believe that my posts are marked with an indication that I am a member
of the team.
But I do not speak for the team, which is why I (generally) include a
It’s important that users understand this - it gives me freedom to give
my own opinions (sometimes at variance with the official Qubes line). It
also means that if I make mistakes, and my posts are at variance with the
Code of Conduct, this reflects only on me, not on Qubes.

I never presume to speak for the Qubes team.
When I comment in the Forum or in the mailing lists I speak for myself.