How-to Recover After Upgrade a Non Bootable Xubuntu 15.04-14.10-14.04 GNU/Linux on EFI Systems

May 4th, 2015 by thelinuxevangelist

Linux Xubuntu How-to Recover an Upgraded Non Bootable EFI System

The Linux Tutorial Shows You Step-by-Step How-to Try a Generic Recovery for a Non Bootable EFI Xubuntu 14.04-Trusty/14.10-Utopic/15.04-Vivid i386/amd64 GNU/Linux System After Upgrade.

Take into account that for an Upgraded Xubuntu EFI System Recovery a Grub 2 Bootloader Re-Installation May be Needed.

Ubuntu 14.04 Trusty LTS Recovering a Non Bootable System After System Upgrade
  1. Boot System with a Live Xubuntu Same as Your System

    Get and Burning Xubuntu Live
  2. Open a Shell Terminal Emulator Window
    (Press “Enter” to Execute Commands)

    Fixing Non Bootable Xubuntu 14.04 Trusty LTS after Upgrade - Open Terminal
  3. Eventually to Find the Volume to Mount (LVM or Ordinary Partition)

    sudo apt-get install lvm2
  4. Chrooting into Xubuntu System

    1. Mounting the Root

      sudo su
      mount /dev/[sdAX] /mnt/

      For Example:

      mount /dev/sda2 /mnt/
    2. Then Only if Boot is in a Separate Partition: Mounting the Boot

      mount /dev/[sdaY] /mnt/boot
    3. Mounting Proc,Dev & Sys

      mount -t proc none /mnt/proc
      mount -o bind /dev /mnt/dev
      mount -t devpts none /mnt/dev/pts
      mount -o bind /sys /mnt/sys
    4. Chrooting

      chroot /mnt/ /bin/bash

      Testing Network Connection:

      ping -c 3

      If No Network Connection then Try:

      cp /etc/resolv.conf /mnt/etc/resolv.conf

      And then Chroot Again!

      chroot /mnt/ /bin/bash
  5. Updating Apt Repos

    apt-get update
  6. Fixing eventual Unresolved Processes

    apt-get -f install
  7. Upgrading System Again

    apt-get upgrade
    apt-get dist-upgrade
  8. Reinstalling Grub 2 on Xubuntu EFI Systems:

    Ubuntu Grub 2 EFI Fixing Guide
  9. Rebooting Xubuntu System


    Eventually Eject the Live Xubuntu Media…

    reboot now
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