I have installed Kubuntu over another distro in a system with dual boot Windows / Kubuntu , and now Kubuntu starts directly with no grub for dual boot.

I had to install it in EFI because installer warned me about that issue. I used Boot Repair and here is the Pastebin: http://paste.ubuntu.com/p/9S82qs2fd3/

Boot-Repair also says this when I Try to repair the grub:

GPT detected. Please create a BIOS-Boot partition (>1MB, unformatted filesystem, bios_grub flag). This can be performed via tools such as Gparted. Then try again. Alternatively, you can retry after activating the [Separate /boot/efi partition:] option.

(not sure how to do that)

I have tried this: https://pastebin.com/artMiLjP

But it doesn't work.

If I use sudo os-prober into a Live Boot Repair console, appears:

/dev/sda1:Windows 10:Windows:chain
/dev/sdd3:Ubuntu 18.10 (18.10):Ubuntu:linux
/dev/sde1:Windows 10:Windows1:chain

But if I use it booting from my new Kubuntu, there is not output:

slamelov@Kubuntu-Ultra:~$ sudo os-prober

1 Answer 1


Try this one:

# update-grub


$ sudo update-grub

# - it means Superuser

  • It does not work <br> 'Generando un fichero de configuración de grub... Encontrada imagen de linux: /boot/vmlinuz-4.18.0-13-generic Encontrada imagen de memoria inicial: /boot/initrd.img-4.18.0-13-generic Encontrada imagen de linux: /boot/vmlinuz-4.18.0-10-generic Encontrada imagen de memoria inicial: /boot/initrd.img-4.18.0-10-generic Añadiendo menú de entrada de inicio para la configuración del firmware EFI hecho'
    – Slamelov
    Jan 14, 2019 at 20:18

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.