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UEFI bootloader support in YaST-bootloader

Feature state

openSUSE Distribution


After installing with Grub2 on top of UEFI, it was a matter of 2 files and single command to boot kernel directly from UEFI, without grub2. Saves about 4-5 seconds during the initial start of laptop.

cp /boot/vmlinuz-3.15.8-2.g258e3b0-desktop /boot/efi/EFI/opensuse/vmlinuz-3.15.8.efi
cp /boot/initrd-3.15.8-2.g258e3b0-desktop /boot/efi/EFI/opensuse/initrd-3.15.8
## here you have to read through grub2 config files to find some options for the next line
efibootmgr -c -d /dev/sda -p 1 -L "openSUSE 13.1, kernel 3.15.8" -l '\EFI\opensuse\vmlinuz-3.15.8.efi' -u 'root=UUID=084ad222-2062-48b8-9b44-2fed2b8897de resume=/dev/disk/by-id/ata-ST500LM021-1KJ152_W6209FYT-part3 splash=silent quiet showopts initrd=EFI/opensuse/initrd-3.15.8'

So, OpenSUSE support for UEFI is awesome, if you're a geek, but still would like not to repeat the procedure after every kernel update, would like YaST to take care of it.

User benefit:

Because it is extremely convenient for people, who have only openSUSE on their laptop/desktop, so CSM, grub and all steps in between is just waste of startup time.


icons/user_comment.png N. R. wrote: (3 years ago)

I won't be doing this.

However: Why not name the files in the opensuse directory just "vmlinuz" and "initrd", without the version numbers. That way, on a kernel update, you need only recopy the files. You won't need to rerun "efibootmgr".

Last change: 12 months ago
Score: 5
  • Negative: 0
  • Neutral: 0
  • Positive: 5
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