Keep kernel forever on Fedora

Keep_kernel_forever_on_Fedora.txt

I was having trouble with Fedora 27 and kernels newer than 4.15.3-300 booting
my Lenovo P50.  I have a 4.15.3-300 kernel that does not hang on boot.

I did some Googling and found a way to keep the 4.15.3-300 from being
automatically deleted va dnf.

REF:
https://ask.fedoraproject.org/en/question/37532/how-to-tell-yum-to-keep-an-old-kernel-when-updating-the-kernel/

	yumdb set installonly keep kernel-4.15.3-300.fc27

	If I update the system after, I still get new kernel versions. Automatic removing of new kernels also still works using the installonly_limit value found in /etc/yum.conf.

	If I want to revert the previous change, I can use this command:

	yumdb del installonly kernel-4.15.3-300.fc27

I had to install yum-utils:

	dnf -y install yum-utils
	
But of course, yumdb has been deprecated:

	# yumdb set installonly keep kernel-4.15.3-300.fc27

	Yum-utils package has been deprecated, use dnf instead.
	See 'man yum2dnf' for more information.


	kernel-4.15.3-300.fc27.x86_64
		 installonly = keep