Steve Grubb writes:
Rescue mode? I couldn't find it. All references I could find to a rescue mode date back to 2013 or later. I would have liked a rescue mode because makes it easy to just chroot into your actual system from the livecd. Seems like we've lost something nice if its really been dropped.
Somewhere around that era, installing Fedora added a grub menu entry for "Rescue" mode. I don't remember exactly what it was supposed to rescue, and how.
It's been sitting in the grub menu ever since.I have a /boot/vmlinuz-0-rescue-f0fe67c2a80d43d2947358968ab5277e with a 2013 timestamp. No idea which kernel it is. It appears to be immune to installonly_limit.
I wound up solving the problem by using the workstation livecd, mounting the /boot partition, and issuing the grub2-install command. This worked, but the
https://fedoraproject.org/wiki/Common_F30_bugs#GRUB_boot_menu_is_not_populated_after_an_upgrade offers a more simple bandaid.Checking a "Common Fxx bugs" page before every upgrade has been a well- established ritual for quite some time.
I am thinking that something could have been put into dnf system-upgrade where it could have warned about the problem or did a workaround. Actually, this could still be put into system-upgrade because not everyone switches first week or two because they are waiting to see what problems people hit before doing it themselves.
That's what I suggested yesterday.
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