If you are in grub rescue mode, then run these commands to reconfigure grub: Use fdisk -l to see the name of your stoage device. dev/sda in grub-install /dev/sda is the name of your storage device, not the name of partition. dev/sda + is your EFI partition which is most likely /dev/sda1. Mount -o remount,rw /dev/sda+ /mnt/boot/efi Mount -bind /sys/firmware/efi/efivars /mnt/sys/firmware/efi/efivars If you update UEFI from 1.x to 1.y then it remains there.īoot into kali live USB and follow the instructions: If you update UEFI from 1.x to 2.x then entry of Grub is removed from the boot-menu. If you update UEFI it deletes the entry of kali from NVRAM. The reason can be failed grub installation or Windows major updates.
Right after installation or after updating your UEFI, do you find that kali is missing from boot menu options? You can see the entry of Windows boot manager but there is no entry of kali in boot menu. The booting process of UEFI is completely different from that of BIOS.
If you have dual booted kali with Windows 10 then most probably you are running PC with UEFI firmware.
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