[SOLVED] How to Install A New Kernel

khronosschoty · 02-12-2022, 12:49 PM

Quote:

Originally Posted by Petri Kaukasoina

Or you could clean old stuff and add modules for two kernel versions in one go:

Code:

mkinitrd -c -k 5.15.19:5.16.8 -f ext4 -r /dev/sda2 -m ext4 -o /boot/initrd.gz

(mkinitrd_command_generator.sh makes a long list of modules but usually it's enough to include the module for the root file system. YMMV.)

Now that is something I was unaware of -- two kernel versions in one go! thanks

Bertman123 · 02-12-2022, 02:40 PM

Quote:

Originally Posted by fourtysixandtwo

The other option is to just modify grub.cfg. I do the following and this only makes changes to the first menuentry section.

Code:

#modify as needed for specific kernel
/usr/sbin/grub-mkconfig | sed '/^menuentry/,/^}/{s/5.15.19/5.16.8/; s/vmlinuz\-huge\-/vmlinuz\-generic\-/}' > /boot/grub/grub.cfg

I can't use grub on my tower yet. I have to create a /uefi partition. I repurposed a hard drive that had another distro on it and the HD was set up with GPT partitioning, but I didn't pl;an on installing grub at the time, so I just have a /swap, /, and /home partition. I'll resize my home partition at some point and install grub, but I wanted to get better at installing new kernels first. Previously I just used the huge kernel and let the new kernels overwrite the huge kernel each time.

gauchao · 02-12-2022, 03:14 PM

Quote:

What does geninitrd do? I read that this is new to 15, but I am not sure what it does exactly and if it's something that I need to use.

It generates /boot/initrd.gz for the generic kernel.

At the moment, I prefer to execute mkinitrd manually and then copy both initrd.gz and vmlinuz* from /boot/ to /boot/efi/EFI/Slackware/ (and later adjust elilo.conf if I need to).

dchmelik · 02-12-2022, 06:59 PM

How would you specify initrd-old.gz if you're forced to use GRUB2 (I started another thread about recent problems with LILO on NVME.)