The grub 2 bug has really been chewing on Fedora's OStree distributions. I copied this from a Fedora Magazine article this morning. In my case this was very helpful.
"Due to an unfortunate combination of issues, the Fedora Silverblue, Kinoite and IoT variants that are running a version from 36.20220810.0 and later are no longer able to update to the latest version.
You can use these two commands to work around the bugs:
$ sudo find /boot/efi -exec touch '{}' ';'
$ sudo touch /etc/kernel/cmdline
Afterwards, you can update your system as usual with GNOME Software (on Silverblue) or via:
$ sudo rpm-ostree upgrade
These two issues are rooted in GRUB2 bugs that have only landed in Fedora and do not affect CentOS Stream 9 or RHEL. This also does not affect Fedora CoreOS for different reasons."
There are a fair number of boot managers out there, which are very good. Clover, Systems, Refi all seem to me work well and are much easier to configure and use. Yet grub is sort of the king of the hill and I am not sure I understand its popularity.
Grub bug Fedora OStree
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Re: Grub bug Fedora OStree
I havent experienced any issues with Grub 2 in any of my distros up to now.