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Thread: Can't install - grub not installing

  1. #1
    Join Date
    Mar 2007

    Can't install - grub not installing

    Ok, so this issue is reproduceable on both 12.10 and Mint 14 (after upgrading Ubiquity in Mint). I have a Dell XPS14 which has a 500GB hdd (sda) and a 32GB ssd (sdb).

    I want to install Mint or Ubuntu on sdb, however at the end of the installer it complains that it cannot install grub on sda - i don't want to install it on sda, i want it on sdb. This is using the guided installer with full disk encryption enabled.

    Can anyone shed any light on this?

  2. #2
    Join Date
    Jun 2009
    SW Forida
    Ubuntu 16.04 Xenial Xerus

    Re: Can't install - grub not installing

    I really do not know about encryption, but got involved with this thread. I think he wanted grub on external flash drive.

    Post the link to the BootInfo report that this creates. Is part of Boot-Repair:
    Boot Repair -Also handles LVM, GPT, separate /boot and UEFI dual boot.:
    You can repair many boot issues with this or 'Create BootInfo' report (Other Options) & post the link it creates, so we can see your exact configuration and diagnose advanced problems.
    Install in Ubuntu liveCD or USB or Full RepairCD with Boot-Repair (for newer computers)
    For more info on UEFI boot install & repair - Regularly Updated :
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  3. #3
    Join Date
    Nov 2011

    Re: Can't install - grub not installing

    If you are installing from the desktop iso with the GUI: at the partitioning page of the installer, select Something else, and select to install grub to /dev/sdb (not sda, not any number sdb1 etc). There is a corresponding page in the alternate installer (text based).

  4. #4
    Join Date
    Nov 2009
    Mataro, Spain
    Ubuntu 14.04 Trusty Tahr

    Re: Can't install - grub not installing

    Is this a laptop with combo hdd+ssd? Usually they come configured as a sort of raid, or Intel RST. Even if you break the IRST thee is still meta data remains on the disks which confuses linux whether you are using raid or not. This is the most often cause why grub2 install fails.

    If you did break the IRST, try removing meta data from live mode with:
    sudo dmraid -Er /dev/sda
    sudo dmraid -Er /dev/sdb
    But if you are still using IRST don't run the commands since I'm not sure what it will do.

    Also, if you want grub2 to be on sdb you can't use the guided installer since I think by default it will try to install to the first disk, sda. You have to use the manual install for more control.
    Ubuntu 14.04 LTS 64bit & Windows 10 Pro 64bit


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