2 identical empty qubes boot from same iso CD differently, one works, one fails

[RefinedSoftwareLLC]

Qubes OS version:

R4.0

Affected component(s):

"Boot qube from CDROM" feature

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Steps to reproduce the behavior:

Using the "Boot qube from CDROM" on Qubes with the exact same settings in the Qube Manager:
With one of my qubes, Booting from ROM... displays, and it crashes.
With one of my qubes, Booting from DVD/CD... displays, and it works.

Settings then Install

Download: Qubes-R4.0-x86_64.iso
Open Qube Manager, Menu Qube, Select Create new qube.

Note: [Dom0] Create new qube popup displays.

• Name and label: settings-install
• Type: Standalone qube not based on a template
• [X] launch settings after creation
• [ ] install system from device (also available from settings)

Press OK.

Note: [Dom0] Settings: settings-install popup displays.
Tab Advanced

• Mode: HVM

Press Boot qube from CDROM.

Boot from Qubes-R4.0-x86_64.iso.

SeaBIOS (version rel-1.10.2-0-g5f4c7b1-prebuilt.qemu-project.org)
Machine UUID <redacted>
Booting from ROM...

Note: Crashes.

Install then Settings

Download: Qubes-R4.0-x86_64.iso
Open Qube Manager, Menu Qube, Select Create new qube.

Note: [Dom0] Create new qube popup displays.

• Name and label: install-settings
• Type: Standalone qube not based on a template
• [ ] launch settings after creation
• [X] install system from device (also available from settings)

Press OK.

Boot from Qubes-R4.0-x86_64.iso.

SeaBIOS (version rel-1.10.2-0-g5f4c7b1-prebuilt.qemu-project.org)
Machine UUID <redacted>
Booting from DVD/CD...

Note: Works.
Open Qube Manager, Right click install-settings qube, Select Qube Settings.

Note: [Dom0] Settings: install-settings popup displays.
In tab Advanced, Press Boot qube from CDROM.

Boot from Qubes-R4.0-x86_64.iso.

SeaBIOS (version rel-1.10.2-0-g5f4c7b1-prebuilt.qemu-project.org)
Machine UUID <redacted>
Booting from DVD/CD...

Note: Still works.

Expected behavior:

Booting from ISO CDROM should work on all Qubes.
If the example settings-install qube needs to have an internal setting changed, either:

• Temporarily change setting when the "Boot qube from CDROM" feature is used, and stop permanently setting it with the install system from device (also available from settings) feature.
• Permanently change setting on all qubes.
• Temporarily change setting for any qube in HVM mode.
• Add setting as an option in the "Boot qube from CDROM" feature.
• Add setting as an option in the Qube Manager's qube settings.

Actual behavior:

2 qubes with the same Qube Manager settings, runs the "Boot qube from CDROM" feature differently, with one of them crashing.

General notes:

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Related issues:

The solution to this issue, might also fix #3078.

[RefinedSoftwareLLC]

I was able to reproduce, and updated this bug report with the steps to.

I believe my example settings-install qube never calls Booting from DVD/CD... and Booting from ROM... is unrelated as just being the next boot option. But encase it is, searching online for Booting from ROM... has documentation of Boot from a BEV entry on an optionrom.

[RefinedSoftwareLLC]

I was able to reproduce, and updated this bug report with the steps to.

I believe my example settings-install qube never calls Booting from DVD/CD... and Booting from ROM... is unrelated as just being the next boot option. But encase it is, searching online for Booting from ROM... has documentation of Boot from a BEV entry on an optionrom.

[awokd]

https://www.qubes-os.org/faq/#my-hvm-in-qubes-r40-wont-let-me-startinstall-an-os

[awokd]

https://www.qubes-os.org/faq/#my-hvm-in-qubes-r40-wont-let-me-startinstall-an-os