GRUB Boot-Repair Issue

[lukasr78]

I tried to install Kali Linux, it worked perfect. After a short period of time, I wanted to install NVIDIA display drivers to use my dedicated GPU. Following the official guide on the Kali Docs, I found myself stuck. When I am booting my BIOS says that there is no bootable device. After that I tried to run a live Ubuntu ISO, which suceeded. I ran boot-repair, but it failed. It brought that error message back: http://paste2.org/hA4ALJc4

Please help me, I do not know what to do.

Thanks

[_defalt]

Is your Legacy BIOS enabled because it must be disabled at least for kali-rolling it is not required. Your grub boot loader might be got corrupted. Boot-repair doesn't work with UEFI system and GPT partitioning of disk. Boot into kali-live non-persistent using bootable USB and enter these commands:

1. fdisk -l
It will display the list of all partitions and the one in which kali-linux is installed
2. sudo mount /dev/sda* /mnt
Replace star with the number in which kali-linux is installed
3. sudo mount --bind /dev /mnt/dev
4. sudo mount --bind /proc /mnt/proc
5. sudo mount --bind /sys /mnt/sys
6. sudo chroot /mnt
7. grub-install /dev/sda
8. CTRL+D
9. sudo umount /mnt/dev
10. sudo umount /mnt/proc
11. sudo umount /mnt/sys
12. sudo umount /mnt

I have a feeling that it will show error after entering the 7th command. Anyway try this. I'll update the commands if they don't work.