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!