Bug 2464157

Summary: Dual‑Atomic install failure (Anaconda + GRUB + OSTree)
Product: [Fedora] Fedora Reporter: Denton <dentonbowles>
Component: anacondaAssignee: Martin Kolman <mkolman>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: unspecified    
Version: 44CC: alpha, anaconda-maint, kkoukiou, mkolman, travier, w
Target Milestone: ---Keywords: InstallerIntegration, RFE, UserExperience
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
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Clone Of: Environment:
Last Closed: 2026-05-19 13:36:22 UTC Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description Flags
installation_unknown_error_Screenshot_Binder1 none

Description Denton 2026-04-30 16:19:33 UTC 
Attempting to install a second Fedora Atomic/Kinoite 44 system on the same disk consistently fails. Anaconda detects the existing OSTree deployment and incorrectly enters the GRUB2 multi‑boot path. It then attempts to run:

Code

grub2-mkconfig
against OSTree layouts, which is unsupported. This results in a fatal crash during the bootloader write stage. Partitioning itself is valid — the failure is purely in the bootloader path selection.

Reproducible: Always

Steps to Reproduce:
1.install Fedora Atomic/Kinoite 44 on a disk
2.install second Fedora Atomic/Kinoite 44 on a disk using defaults
3.install crashes with error message
Actual Results:
install crashes with error message:
error: Bootloader write config:grub2-mkconfig:Child process existed with code 1

Expected Results:
installed the second system with its own partitions but sharing the 600MB partition

Additional Information:
Relabeling /var (no stampfile 'var/.ostree-selabeled'found)
pyanaconda.modules.common.errors.installation.PayloadInstallationError: The command'ostree admin --sysr [truncated]
File "/usr/lib/python3.14/site-packages/dasbus/client/handler.py",line 133, in_signal_callback callback(parameters,*callback_args)

I did press report bug but I dont know if anything happended!
Comment 1 Denton 2026-04-30 16:32:17 UTC 
Created attachment 2138916 [details]
installation_unknown_error_Screenshot_Binder1

screen shots of error for context
Comment 2 Denton 2026-04-30 16:39:08 UTC 
from Adam Williamson
adamwill
Packaging Team
1h
Can you please file a bug on the dual-Atomic install issue? Thanks!
Comment 3 Timothée Ravier 2026-05-19 13:36:22 UTC 
This is most likely https://forge.fedoraproject.org/atomic-desktops/tracker/issues/110 / https://bugzilla.redhat.com/show_bug.cgi?id=1575957

*** This bug has been marked as a duplicate of bug 1575957 ***