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Thread: Unable to boot Ubuntu 16.04 because grub menu is unavailable

  1. #1
    Join Date
    Dec 2018
    Beans
    1

    Post Unable to boot Ubuntu 16.04 because grub menu is unavailable

    I am not getting grub menu after mistakenly deleting /boot/efi directory files.So i tried to repair grub file using both methods given in this link https://www.howtogeek.com/114884/how...ntu-wont-boot/ . while repairing through boot repair method i get this error ( 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) . I have also created boot info summary that is
    http://paste.ubuntu.com/p/fc7GtzprS7/
    After that i tried second method using terminal then i get Embedding is not possible error,blocklists are unreliable and their use is discouraged ,grub-install will not proceed with blocklists.


    Can anyone please help me to find the root cause and how this issue can be fixed?

    Thanks,
    Piyush

  2. #2
    Join Date
    Jun 2006
    Location
    UK
    Beans
    Hidden!
    Distro
    Ubuntu 16.04 Xenial Xerus

    Re: Unable to boot Ubuntu 16.04 because grub menu is unavailable

    Support request, not chat.

    Thread moved to General Help.
    Ubuntu 16.04 Desktop Guide - Ubuntu 17.10 Desktop Guide - Forum Guide to BBCode - Using BBCode code tags - IRC #ubuntuforums

    Member: Not Canonical Team

    Please do not PM me about your forum account unless you have been asked to. The correct place to contact an admin about your account is here.

  3. #3
    Join Date
    Jun 2009
    Location
    SW Forida
    Beans
    Hidden!
    Distro
    Ubuntu

    Re: Unable to boot Ubuntu 16.04 because grub menu is unavailable

    You have to have the ESP - efi system partition for an grub repairs to work.
    The boot of your PC is in EFI mode, but no EFI partition was detected.
    And if Boot-Repair is suggesting a bios_grub partition that is for a BIOS boot repair, not an UEFI repair.
    How you boot install media UEFI or BIOS/CSM/Legacy is then how it installs or wants to repair, or always boot in UEFI boot mode. And it has to see an ESP.

    Did you convert sda1 from FAT32 to ext4?
    The ESP must be FAT32 with boot flag and/or esp flag.

    If you convert sda1 back to an ESP, then the full uninstall/reinstall of grub in Boot-Repair's advanced mode should work.
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

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