LibreElec dual boot with any other Linux distro on UEFI.

1st Official Post

    Hello hi to all,

    I am stuck with a dual boot situation with LibreElec and Ubuntu, in UEFI mode. my hardware is 9th gen intel, with M2 ssd, there is no legacy bios in my B365 mother board.

    I have manual partition in the following order

    sda1 512mb /boot/efi. (fat32)

    sda2 200gb for / (ubuntu installation) (ext4)

    sda3 1Gb /System partition for LibreElec (ext4)

    sda4 30gb /Storage partiton for LibreElec (ext4)

    installed and boots to ubuntu. where in I copy the LibreElec target files to System partition.


    as per the info available on Google and other forums edited grub file to add menu entry for LibreElec. whatever I do I am not able to see LibreElec and boot

    when the system starts there is no grub menu for selection, directly boots to Ubuntu.

    what am I doing wrong ?

    how do we add LibreElec to EFI manager and grub menu to display the selection of OS

    I have searched this forum for dual boot this thread followed the steps but to dismay, just doesn't work.

    Due Diligence Complete - Still No Answer Re: Dual-Boot


    experts pls point me to the right direction and solution.

    Tx

    You can use grub customizer with your ubuntu. It is a gui for editing grub. You can add your partition and required parameters even install boot menu theme, boot menu resolution/font change etc. Mount your LE partition. Find LE's boot parameters. Transfer them to grub customizer. It should work.

    • Official Post
    Quote from openbaffle

    will it be possible for you to post the method of dual boot and grub

    Just enter the correct details in Ubuntu's /etc/grub.d/40_custom file.

    Not sure exactly how I got multiple setups, I think I created the initial one and then simply copied the two partitions a couple of times using GParted. Entering the correct drive & partition numbers in the 40_custom file does the rest.

    Three LibreELEC setups here, mind to use your own root, boot and disk settings.

    Then with the sudo update-grub2 , "things should work".(tm)

    Thanks to Klojum  mglae for the pointers towards the dual boot, today I successfully dual booted to both Ubuntu and LibreElec.

    For the benefit of beginners to dual boot LibreElec & ubuntu I am posting the steps involved.( should work with another Linux Distro)

    as said earlier the hardware is UEFI.

    Dual boot LibreElec & Ubuntu 18.04

    first partition the SSD as below

    sda1 512mb /boot/efi (EFI partition)

    sda2 100gb / (Root Partition Ubuntu)

    swap area twice of ram (optional)

    sda3 512mb LE_SYS (System partition for Le)

    sda4 100gb LE_DAT (Storage partition for Le)

    install Ubuntu to sda2 / partition

    install Ubuntu boot-loader to sda ( the ssd drive not the partition)

    boot to Ubuntu

    mount sda3 LE_SYS partition and copy LibreElec's Kernel and System files to the partition, keep it mounted till grub2 update

    while in Ubuntu

    create the below grub custom cfg file

    sudo nano /boot/grub/custom.cfg

    add the following lines to the file and close

    ====================================

    menuentry "LibreELEC" {

    search --set=root --label LE_SYS

    linux /KERNEL boot=LABEL=LE_SYS disk=LABEL=LE_DAT quiet tty

    }

    =======================================================

    after above steps do the below

    sudo update-grub2

    reboot the system, after bios menu pres ESC to Ubuntu Boot-loader menu there you will find Ubuntu and LibreELEC

    select either of OS.

    To make LE boot as default OS then edit the below file

    sudo nano /etc/default/grub.cfg

    GRUB_DEFAULT=3 or "LibreELEC" (the no corresponding to os starts from 0 or name of os in quotes "LibreELEC")


    save & close the file,then,

    Sudo update-grub

    when you reboot LE will boot directly

    while reboot if you hit ESC you will get boot-loader menu, where you can choose between the different OS.

    Menu will appear if you press and hold Shift during loading Grub, if you boot using BIOS. When your system boots using UEFI, press Esc.

    =======================================================