Fixes #38178 - Add linuxefi/initrdefi wrapper to GRUB2 templates #10430
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Back in time, GRUB2 is using `linux` and `initrd` commands to load the kernel and initrd into ram on legacy BIOS. Later, `linuxefi` and `initrdefi` commands have been added to do the same on UEFI platforms. However, it looks like that `linuxefi` and `initrdefi` commands are deprecated and distributions like Ubuntu started to remove them starting with 24.04. In case of Secure Boot [1] and Ubuntu 24.04 - putting corresponding shim+GRUB2 binaries in bootloader universe directory - the network boot is not working anymore because of used `linuxefi/initrdefi` commands in the involved GRUB2 configuration templates. In order fix this we can simply add wrapper functions to provide `linuxefi`/`initrdefi` as commands. [1]:theforeman#9864
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Back in time, GRUB2 is using
linuxandinitrdcommands to load the kernel and initrd into ram on legacy BIOS. Later,linuxefiandinitrdeficommands have been added to do the same on UEFI platforms.However, it looks like that
linuxefiandinitrdeficommands are deprecated and distributions like Ubuntu started to remove them starting with 24.04.In case of Secure Boot 1 and Ubuntu 24.04 - putting corresponding shim+GRUB2 binaries in bootloader universe directory - the network boot is not working anymore because of used
linuxefi/initrdeficommands in the involved GRUB2 configuration templates.In order fix this we can simply add wrapper functions to provide
linuxefi/initrdefias commands.