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I installed Kali Linux on 1 partition and after that I installed Ubuntu 16.04 on the other one but when I start my PC , the only boot option is "Kali-grub" or "advanced options for kali ".

When I load Kali and open the Linux partition I can see that the Ubuntu is installed on it.

Please tell me how can I boot it (i checked in Disks and it says that the partition is Bootable ).

David Marjanovic
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  • boot from a live media and repair grub. This covers it (disregard the word Windows): https://help.ubuntu.com/community/RecoveringUbuntuAfterInstallingWindows – Elder Geek Oct 12 '16 at 23:05
  • @ElderGeek This is what I get when I run grub-install /dev/sda3

    installing for i386-pc platform. grub-install: warning: File system `ext2' doesn't support embedding. grub-install: warning: Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However, blocklists are UNRELIABLE and their use is discouraged.. grub-install: error: will not proceed with blocklists. P.S. Can't fix it with live version, when I boot installation USB it just runs setup

     – David Marjanovic Oct 12 '16 at 23:19
  • Is there a specific reason why you are trying to install grub in a partition rather than on the MBR of the drive? As in sudo grub-install /dev/sda Perhaps this link is more useful in your situation: https://help.ubuntu.com/community/Grub2/Installing – Elder Geek Oct 12 '16 at 23:22
  • @ElderGeek Can I somehow e-mail or pm you ? I want to have dual boot for Kali and Ubuntu, where should i install grub? – David Marjanovic Oct 12 '16 at 23:25
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    @DavidMarjanovic You should install it to the MBR: /dev/sda – You'reAGitForNotUsingGit Oct 12 '16 at 23:28
  • @AndroidDev I have sda1-5 , should i just type /dev/sda ? – David Marjanovic Oct 12 '16 at 23:30
  • @DavidMarjanovic - Yes – You'reAGitForNotUsingGit Oct 12 '16 at 23:30
  • @AndroidDev nope , I did sudo grub-install /dev/sda and reboot but still no Ubuntu in – David Marjanovic Oct 12 '16 at 23:35

1 Answers1

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If Ubuntu isn't showing up as a boot option on the menu you need to update grub before installing it as described here. after that you should install grub to the MBR of your boot drive with the command sudo grub-install /dev/sda

or from within the system that boots issue the commands:

sudo os-prober
sudo update-grub
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Elder Geek
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  • See the comments, that didn't work for OP – You'reAGitForNotUsingGit Oct 12 '16 at 23:36
  • @AndroidDev Saw the comments. Don't see where grub was updated prior to installation. – Elder Geek Oct 12 '16 at 23:37
  • I thought it updates when you install it? – You'reAGitForNotUsingGit Oct 12 '16 at 23:38
  • @AndroidDev Nope. the configuration update is a separate process. There is even a cool project for tweaking GRUB here:https://launchpad.net/grub-customizer – Elder Geek Oct 12 '16 at 23:44
  • Can I somehow install some Ubuntu boot loader and how do I do that (Kali is rolling ) – David Marjanovic Oct 12 '16 at 23:47
  • @ElderGeek I did update-grub i got this Found background image: /usr/share/images/desktop-base/desktop-grub.png Found linux image: /boot/vmlinuz-4.3.0-kali1-amd64 Found initrd image: /boot/initrd.img-4.3.0-kali1-amd64 Found Ubuntu 16.04.1 LTS (16.04) on /dev/sda3 done

    As you can se Ubuntu is on /dev/sda3 i did grub-install /dev/sda now i will reboot

     – David Marjanovic Oct 13 '16 at 00:02
  • Happy days are here – Elder Geek Oct 13 '16 at 00:02
  • @ElderGeek Can confirm that it know shows Ubuntu as an option , tnx a lot man but still some problems when I load it (graphics,probably some drivers) , thanks a lot once again – David Marjanovic Oct 13 '16 at 00:08
  • I would search for answers to those other problems here. There are thousands of them. If my answer worked for you please upvote and/or accept it so that others with your problem can find solutions. Regards. – Elder Geek Oct 13 '16 at 00:09