Installation of kernel-core-6.4.10-200.fc38.x86_64 creates two rescue options in GRUB screen

Ask Fedora
1

Hi,

It’s as title says. When I ran sudo dnf update today on a fresh install of Fedora, the GRUB screen on boot now shows two options for rescue. Is there a way to tell which one I am able to remove and how I can remove the second one?

2

Would you like to run sudo grubby --info ALL and paste the result here? It will show all available booting list from your grub.

3

Hi,

Here is the output when running sudo grubby --info ALL

index=0
kernel="/boot/vmlinuz-6.2.9-300.fc38.x86_64"
args="ro rootflags=subvol=root rd.luks.uuid=luks-2e3b7979-705c-4fbd-a2e7-1afb8bfdc21c rhgb quiet"
root="UUID=b1bf7638-a9cf-47ae-a4ea-f8ae78398265"
initrd="/boot/initramfs-6.2.9-300.fc38.x86_64.img"
title="Fedora Linux (6.2.9-300.fc38.x86_64) 38 (Workstation Edition)"
id="e78c3f795c4d4df58730a544e3f4ea38-6.2.9-300.fc38.x86_64"
index=1
kernel="/boot/vmlinuz-0-rescue-e78c3f795c4d4df58730a544e3f4ea38"
args="ro rootflags=subvol=root rd.luks.uuid=luks-2e3b7979-705c-4fbd-a2e7-1afb8bfdc21c rhgb quiet"
root="UUID=b1bf7638-a9cf-47ae-a4ea-f8ae78398265"
initrd="/boot/initramfs-0-rescue-e78c3f795c4d4df58730a544e3f4ea38.img"
title="Fedora Linux (0-rescue-e78c3f795c4d4df58730a544e3f4ea38) 38 (Workstation Edition)"
id="e78c3f795c4d4df58730a544e3f4ea38-0-rescue"
index=2
kernel="/boot/vmlinuz-6.4.10-200.fc38.x86_64"
args="ro rootflags=subvol=root rd.luks.uuid=luks-2e3b7979-705c-4fbd-a2e7-1afb8bfdc21c rhgb quiet"
root="UUID=b1bf7638-a9cf-47ae-a4ea-f8ae78398265"
initrd="/boot/initramfs-6.4.10-200.fc38.x86_64.img"
title="Fedora Linux (6.4.10-200.fc38.x86_64) 38 (Workstation Edition)"
id="b08dfa6083e7567a1921a715000001fb-6.4.10-200.fc38.x86_64"
index=3
kernel="/boot/vmlinuz-0-rescue-b08dfa6083e7567a1921a715000001fb"
args="ro rootflags=subvol=root rd.luks.uuid=luks-2e3b7979-705c-4fbd-a2e7-1afb8bfdc21c rhgb quiet"
root="UUID=b1bf7638-a9cf-47ae-a4ea-f8ae78398265"
initrd="/boot/initramfs-0-rescue-b08dfa6083e7567a1921a715000001fb.img"
title="Fedora Linux (0-rescue-b08dfa6083e7567a1921a715000001fb) 38 (Workstation Edition)"
id="b08dfa6083e7567a1921a715000001fb-0-rescue"
4

It looks like the machine id as found in /etc/machine-id has been changed.

1 Like
5

should that value not be modified at all?

6

It is used in various places to uniquely identify your computer. If you change it, it gets very confusing indeed.

7

Is there a recommended way to changing that value?

8

There is no recommended way to change the machine id, as you are not supposed to change it.

9

Does a fresh install mean an install on a formatted btrfs partition and an accidentally not formatted separate boot partition? That could explain a 6.2 and 6.4 kernel, change of machine-id and dual rescue kernel. Solution: check /etc/machine-id and delete rescue stuff labelled with the other one. It’s generated during kernel install and does not belong to any package.

10

By fresh install, I mean I wiped the SSD clean via Windows, left it unformatted, and then ran the fedora installer via a USB drive to install Fedora. I’ll attempt to delete any rescue stuff later on if I decide to change that value again.