Re: Creating new Resue Kernel??

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On Fri, May 7, 2021 at 8:33 AM Michael D. Setzer II via kernel
<kernel@xxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> Just updated machine to an SDD drive, and then upgrade
> to Fedora 33. Still had old recue kernel so removed the
> files. Expected it to build new kernel after upgrade
> kernel, but no entries created.

It would be unwise to create a rescue kernel with a kernel update, as
you never know if it booted. The installer will create a rescue from
the install kernel, A it had to boot in order to install.

> Use to use this to created new ones before, but the script
> doesn't exist on the Fedora 33.
> /etc/kernel/postinst.d/51-dracut-rescue-postinst.sh
> $(uname -r) /boot/vmlinuz-$(uname -r)
>
> Found a somewhat similar file, but no instructions.
> /usr/lib/kernel/install.d/51-dracut-rescue.install
>
> Is there a process that needs to be one. Have a machine I
> am planning on moving to a new motherboard, and
> wanted to setup its rescue kernel, since new motherboard
> might have hardware that isn't in the current setup?

If you delete your existing rescue kernel (safer to rename it until
you have tested the new one), installing a new kernel will create a
rescue.  Nothing special for you to do other than removing it, and
installing a new kernel.

Justin
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