BTW, an alternative to rEFInd and Live CD is booting an Ubuntu Server ISO and selecting Rescue a broken system. Works with LUKS disk encryption too.
Run grub-install after replacing efibootmgr with a working version.
BTW, an alternative to rEFInd and Live CD is booting an Ubuntu Server ISO and selecting Rescue a broken system. Works with LUKS disk encryption too.
Run grub-install after replacing efibootmgr with a working version.