initramfs

Caution

This module is only supported for Fedora 41+ images.

The initramfs module is used to regenerate initramfs, which is the temporary file system loaded into RAM, as part of the early Linux startup process, used by many things happening during boot.

If you are trying to modify something related to the kernel or boot sequence (such as plymouth), but you don’t see any changes applied to the system, you’ll likely need to use this module.

You need to regenerate initramfs at least when doing any of the following:

• modifying modprobe.d config files
• modifying modules-load.d config files
• modifying dracut.conf.d config files
• customizing plymouth theming
• other unknown modifications

You only need to run the regeneration once per build, not separately for each modification requiring it. It is recommended to set this module as one of the last in your recipe, to ensure that initramfs regeneration will cover all the modifications done before it.

Note

Client-side initramfs regeneration like rpm-ostree initramfs & rpm-ostree initramfs-etc are for local-users only & not to be confused with this module’s build-time initramfs regeneration. This module regenerates the system initramfs during the build process, while rpm-ostree initramfs & rpm-ostree initramfs-etc regenerate the local initramfs on top of the system one every update on the local-user’s system.

Example configuration

type: initramfs