A package to enable systemd-boot automation using kernel-install on Arch-based distros.
The kernel-install hooks were adapted from the AUR package originally written by Tilmann Meyer. Inspired by eos-systemd-boot
The package basically does a few things:
- Overrides the mkinitcpio hooks to generate presets that work with kernel-install
- Installs hooks to automate the installation and removal of kernels using kernel-install
- Saves kernel options to /etc/kernel/cmdline to support recovery in a chroot
Compared to systemd-boot-manager this:
- has no global config file itself, but kernel-install is configurable (see the man page)
- does not support "fallback" initrds
- does support multi-boot scenarios, e.g. multiple installations of the same OS with the same kernel version
Example partition layout:
+----------------------+------------------------+------------------------+
| EFI System Partition | Root filesystem #1 | Root filesystem #2 |
| | | |
| | /boot | /boot |
| /efi | / | / |
|----------------------|------------------------|------------------------|
| /dev/sda1 | /dev/sda2 | /dev/sda3 |
+----------------------+------------------------+------------------------+
I recommend that you enable systemd-boot-update.service as well
Additional information:
Usage: sdboot-kernel [action]
Actions:
install Generate mkinitcpio presets and install kernels, ucode & initramfs
to $BOOT
remove Remove orphaned kernels from $BOOT and mkinitcpio presets
entries for other machine-ids are untouched
$BOOT = EFI system partiton; /efi, /boot or /boot/efi
$BOOT should be considered shared among all OS installations of a
system. Instead of maintaining one $BOOT per installed OS (as /boot/ was
traditionally handled), all installed OS share the same place to drop in
their boot-time configuration.
After installing this package and initializing, your $BOOT partition should look like this:
$ bootctl install
$ sdboot-kernel install
$ find /efi -type f | sort
/efi/${MACHINE_ID}/5.15.25-1-MANJARO/amd-ucode.img
/efi/${MACHINE_ID}/5.15.25-1-MANJARO/initrd
/efi/${MACHINE_ID}/5.15.25-1-MANJARO/linux
/efi/${MACHINE_ID}/5.17.0-2-MANJARO/amd-ucode.img
/efi/${MACHINE_ID}/5.17.0-2-MANJARO/initrd
/efi/${MACHINE_ID}/5.17.0-2-MANJARO/linux
/efi/EFI/BOOT/BOOTX64.EFI
/efi/EFI/systemd/systemd-bootx64.efi
/efi/loader/entries/${MACHINE_ID}-5.15.25-1-MANJARO.conf
/efi/loader/entries/${MACHINE_ID}-5.17.0-2-MANJARO.conf
/efi/loader/loader.conf
/efi/loader/random-seed
$ find /boot -type f | sort
/boot/amd-ucode.img
/boot/linux515-x86_64.kver
/boot/linux517-x86_64.kver
The following hooks will run when installing a kernel:
- /usr/share/libalpm/hooks/90-sdboot-kernel-install.hook
And when removing a kernel:
- /usr/share/libalpm/hooks/60-sdboot-kernel-remove.hook
The following hooks from other packages are disabled:
- /usr/share/libalpm/hooks/60-mkinitcpio-remove.hook
- /usr/share/libalpm/hooks/90-mkinitcpio-install.hook
- /usr/lib/kernel/install.d/50-depmod.install