On Fri, 21 Nov 2014 15:05:59 +0100
jdd
I have tryed this several times, with mixed results, and anyway, I also wants an "hybrid" (aka mbr/efi) system boot. My net test will be through susestudio.
I created a hybrid by just switching to "grub2" (installed in MBR). And "grub2-efi" and the booting setup for EFI remained in place. However, I did that with 12.3. It got harder with 13.1 and later. If you setup for secure-boot, then grub.cfg is going to use: linuxefi kernel-file initrdefi initrd-file and that won't work with MBR booting. So you either need two versions of "grub.cfg" (I called one of them "grub.altcfg") or you need to give up on secure-boot. It's easy enough to change the "grub.cfg" in the EFI partition to load "grub.altcfg". And it is easy to come up with a "sed" script to generate the "grub.altcfg" from "grub.cfg". But you need to remember to run that after a grub configuration update.
but I already noticed that efi bioses differ very much from a computer to an other.
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