Reinstall the Kernel with yum
Published: 20 July 2016
Note: this article is old and may contain outdated or incorrect information.
After failing to update the initrd after making changes to the plymouth boot I was unable to boot into the kernel. The yum reinstall fixed this
$ yum reinstall kernel
However, this doesn't always work. If yum feels the kernel is already installed and healthy this will return 'nothing to do' from yum. In that instance, it is necessary to remove the kernel first.
$ yum remove kernel-<version>
And then, reinstall
$ yum reinstall kernel-<version>
Also see this post