grub2-mkconfig creates grub2-efi.cfg different from the existing one, but why?

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0














On Fedora 29 on a machine with UEFI hardware.



Trying to generate a new /etc/grub2-efi.cfg.



Dry run first!



Change nothing in /etc/default/grub.



(Actually wanted to remove rhgb quiet from the kernel line, but tit turns out this is done by executing plymouth-set-default-theme details --rebuild-initrd instead, see Why is Grub menu not shown when starting my computer?)



As described in Create a GRUB 2 configuration, a new file can be created by running:



grub2-mkconfig 


The resulting file should go to /boot/efi/EFI/fedora/grub.cfg and is referenced by the symlink:



/etc/grub2-efi.cfg --> ../boot/efi/EFI/fedora/grub.cfg 


However, running:



grub2-mkconfig -o OUT
diff --side-by-side --width=200 /etc/grub2-efi.cfg OUT | less


...reveales a certain number of differences between the OUT file and the original among which:



grub2-mkconfig uses linuxefi and initrdefi instructions, but OUT does not, it uses linux and initrd instructions. This sounds wrong!



For example:



Sounds correct in /etc/grub2-efi.cfg :



linuxefi /vmlinuz-4.19.4-300.fc29.x86_64 ....
initrdefi /initramfs-4.19.4-300.fc29.x86_64.img


Sounds wrong in OUT:



linux /vmlinuz-4.19.4-300.fc29.x86_64 ....
initrd /initramfs-4.19.4-300.fc29.x86_64.img


What's going on? Is there some option I forgot about? Can I replace the existing /etc/grub2-efi.cfg?










share|improve this question


























    0














    On Fedora 29 on a machine with UEFI hardware.



    Trying to generate a new /etc/grub2-efi.cfg.



    Dry run first!



    Change nothing in /etc/default/grub.



    (Actually wanted to remove rhgb quiet from the kernel line, but tit turns out this is done by executing plymouth-set-default-theme details --rebuild-initrd instead, see Why is Grub menu not shown when starting my computer?)



    As described in Create a GRUB 2 configuration, a new file can be created by running:



    grub2-mkconfig 


    The resulting file should go to /boot/efi/EFI/fedora/grub.cfg and is referenced by the symlink:



    /etc/grub2-efi.cfg --> ../boot/efi/EFI/fedora/grub.cfg 


    However, running:



    grub2-mkconfig -o OUT
    diff --side-by-side --width=200 /etc/grub2-efi.cfg OUT | less


    ...reveales a certain number of differences between the OUT file and the original among which:



    grub2-mkconfig uses linuxefi and initrdefi instructions, but OUT does not, it uses linux and initrd instructions. This sounds wrong!



    For example:



    Sounds correct in /etc/grub2-efi.cfg :



    linuxefi /vmlinuz-4.19.4-300.fc29.x86_64 ....
    initrdefi /initramfs-4.19.4-300.fc29.x86_64.img


    Sounds wrong in OUT:



    linux /vmlinuz-4.19.4-300.fc29.x86_64 ....
    initrd /initramfs-4.19.4-300.fc29.x86_64.img


    What's going on? Is there some option I forgot about? Can I replace the existing /etc/grub2-efi.cfg?










    share|improve this question
























      0












      0








      0







      On Fedora 29 on a machine with UEFI hardware.



      Trying to generate a new /etc/grub2-efi.cfg.



      Dry run first!



      Change nothing in /etc/default/grub.



      (Actually wanted to remove rhgb quiet from the kernel line, but tit turns out this is done by executing plymouth-set-default-theme details --rebuild-initrd instead, see Why is Grub menu not shown when starting my computer?)



      As described in Create a GRUB 2 configuration, a new file can be created by running:



      grub2-mkconfig 


      The resulting file should go to /boot/efi/EFI/fedora/grub.cfg and is referenced by the symlink:



      /etc/grub2-efi.cfg --> ../boot/efi/EFI/fedora/grub.cfg 


      However, running:



      grub2-mkconfig -o OUT
      diff --side-by-side --width=200 /etc/grub2-efi.cfg OUT | less


      ...reveales a certain number of differences between the OUT file and the original among which:



      grub2-mkconfig uses linuxefi and initrdefi instructions, but OUT does not, it uses linux and initrd instructions. This sounds wrong!



      For example:



      Sounds correct in /etc/grub2-efi.cfg :



      linuxefi /vmlinuz-4.19.4-300.fc29.x86_64 ....
      initrdefi /initramfs-4.19.4-300.fc29.x86_64.img


      Sounds wrong in OUT:



      linux /vmlinuz-4.19.4-300.fc29.x86_64 ....
      initrd /initramfs-4.19.4-300.fc29.x86_64.img


      What's going on? Is there some option I forgot about? Can I replace the existing /etc/grub2-efi.cfg?










      share|improve this question













      On Fedora 29 on a machine with UEFI hardware.



      Trying to generate a new /etc/grub2-efi.cfg.



      Dry run first!



      Change nothing in /etc/default/grub.



      (Actually wanted to remove rhgb quiet from the kernel line, but tit turns out this is done by executing plymouth-set-default-theme details --rebuild-initrd instead, see Why is Grub menu not shown when starting my computer?)



      As described in Create a GRUB 2 configuration, a new file can be created by running:



      grub2-mkconfig 


      The resulting file should go to /boot/efi/EFI/fedora/grub.cfg and is referenced by the symlink:



      /etc/grub2-efi.cfg --> ../boot/efi/EFI/fedora/grub.cfg 


      However, running:



      grub2-mkconfig -o OUT
      diff --side-by-side --width=200 /etc/grub2-efi.cfg OUT | less


      ...reveales a certain number of differences between the OUT file and the original among which:



      grub2-mkconfig uses linuxefi and initrdefi instructions, but OUT does not, it uses linux and initrd instructions. This sounds wrong!



      For example:



      Sounds correct in /etc/grub2-efi.cfg :



      linuxefi /vmlinuz-4.19.4-300.fc29.x86_64 ....
      initrdefi /initramfs-4.19.4-300.fc29.x86_64.img


      Sounds wrong in OUT:



      linux /vmlinuz-4.19.4-300.fc29.x86_64 ....
      initrd /initramfs-4.19.4-300.fc29.x86_64.img


      What's going on? Is there some option I forgot about? Can I replace the existing /etc/grub2-efi.cfg?







      grub2 grub2-mkconfig






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Dec 17 at 15:13









      David Tonhofer

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