Why does yum update kernel not boot into new kernel?

Why does yum update kernel not boot into new kernel?

Also, the file ‘/etc/grub.cfg’ is a symbolic link to ‘/boot/grub2/grub.cfg’ file (in case of EFI based systems /boot/efi/EFI/redhat/grub.cfg). Looking at your problem description I presume that system boots into older kernel without any issues. If this is the case then it could be due to the reason that ‘/etc/grub.cfg’ symbolic link file not there.

Where to find GRUB2 file in yum update?

Also, you may post the output of the following for further help: By default, there is ‘grub2’ folder under /boot, if this is an EFI based system then check if there is ‘efi/EFI/redhat’ folder under which you could see ‘grub.cfg’ file.

Where to find grub.cfg in BIOS based system?

By default, there is ‘grub2’ folder under /boot, if this is an EFI based system then check if there is ‘efi/EFI/redhat’ folder under which you could see ‘grub.cfg’ file. This is a Bios based system as there is no grub.cfg in /boot ““““““““““““““““““““““““““““““““““

How to fix volume group < old-VG-name >?

After running vgrename and change the name in /etc/fstab and /boot/grub/grub.cfg, and reboot for the first time (or several times), I checked /etc/initramfs-tools/conf.d/resume for swap path and ran dpkg-reconfigure linux-image-4.19.0-8-amd64. This regenerates the initramfs and grub. The problem disappears in next rebooting.

How to tell when a kernel version was last booted?

The Modified Date is discovered using the stat command. On my system that date is “touched” every time the kernel is booted using this ( How do you find out when a specific kernel version was last booted?) cron reboot script. However, on your system the date will be the kernel release date, not the last time you booted it.

Why is my / boot partition filled with old kernels?

Your /boot partition is filled with old kernels. It does that sometimes, not sure why it is never fixed. You can easily remove the old kernels if you know which packages they came in. First check uname -a to check your current version.

Can a kernel be removed from the boot directory?

The current kernel you booted with cannot be removed and isn’t included in the list. The size reported is how much will be saved in /boot directory. More is saved on your disk because kernel binaries reside in other areas too. July 27, 2017 note: The directories /usr/src/*kernel_version* and /lib/modules/*kernel_version* are now included as well.

How to boot an earlier kernel on Fedora magazine?

You can tell by the higher version number displayed in the entry. To select a different entry, use your arrow keys to select the previous version. Then hit Enter to boot that version. Typically a Fedora system will keep up to three kernel versions installed on the system.

How many versions of Fedora kernel are there?

Typically a Fedora system will keep up to three kernel versions installed on the system. When a newer kernel is updated, up to two previous versions are kept on the system.

Where is the GRUB configuration file in RedHat?

If that’s not the case, then the GRUB configuration is located in the /boot/efi/EFI/redhat/ directory. Anyway, the solution can be to reinstall GRUB, and then update the config : Please report back if it solved the problem I wish you good luck ! 🙂 In RHEL7.x release the grub configuration file is ‘grub.cfg’, in older release it is ‘grub.conf’.

When to configure the bootloader in Debian?

Configuring the Bootloader It is probably already functional, but it is always good to know how to configure and install the bootloader in case it disappears from the Master Boot Record. This can occur after installation of another operating system, such as Windows.

What to do if you find error in grub install?

If you find errors there (because you know that your BIOS detects drives in a different order), correct them manually and run grub-install again. grub-mkdevicemap can help creating a device.map file from which to start. Partitions also have a specific name in GRUB.

What happens when a device is overlayed in Linux?

As a result of the overlay, a new device node (bar) has been created so a bar platform device will be registered and if a matching device driver is loaded the device will be created as expected.

When to deregister a device in Linux kernel?

Since the kernel mainly deals with devices, any new device node that result in an active device should have it created while if the device node is either disabled or removed all together, the affected device should be deregistered. Lets take an example where we have a foo board with the following base tree:

How to remove an overlay from a device?

Call of_overlay_fdt_apply () to create and apply an overlay changeset. The return value is an error or a cookie identifying this overlay. Call of_overlay_remove () to remove and cleanup the overlay changeset previously created via the call to of_overlay_fdt_apply ().

How to rebuild initramfs after installing a new kernel?

The CentOS package maintainer seems to have left out or munged the step that builds initramfs after the new kernel is installed. You’re left with an unbootable system. Boot into the previous kernel version (in rescue mode). Re-run dracut for the newer kernel (this step rebuilds initramfs ).

Why does CentOS boot into an unbootable system?

This seems to be a common problem with the latest update to the kernel module. The CentOS package maintainer seems to have left out or munged the step that builds initramfs after the new kernel is installed. You’re left with an unbootable system. Boot into the previous kernel version (in rescue mode).

Why does RHEL 7.4 system not boot after updating?

The files under /boot for all kernel (vmlinuz.x, intramfs.x) are available and /boot/grub2/grub.cfg has the right strings for every kernel. Creating new initrd also don’t work. Yes, we have valid support subscription and wie can raise a case with Redhat.