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Thread: 15.10 Wont boot - Missing boot loader

  1. #1
    Join Date
    Jul 2010
    Beans
    8

    15.10 Wont boot - Missing boot loader

    Hi everyone,

    I have done some initial reading up on previous similar problems from previous posts, but I cant quite make heads or tails to my own problem, so my apologies if this problem has been posted and solved exactly before.

    I am using an Acer E5-522g laptop that previously had Windows 8 installed, and wanted to switch to Ubuntu has it did not have an activated Windows copy and didn't want to buy. I have successfully installed Ubuntu 15.1 on 3 other devices using this boot cd, but this time after what I thought was a successful install, after restarting the device does not recognize any bootable drive.

    http://paste.ubuntu.com/15247263/
    this is the boot info for the laptop currently.

    From this I can see that no boot loader is installed in the MBR /dev/sda; is this the main cause of the problem? And if so, how come this was not an issue before?

    I have also disabled secure boot from the bios.

    Any help at all will be very much appreciated !

    Many thanks

  2. #2
    Join Date
    Mar 2011
    Beans
    1,539

    Re: 15.10 Wont boot - Missing boot loader

    Missing the MBR in UEFI is no problem, you have all the UEFI bootloaders in sda1. Try turning off legacy/compatibility mode and boot in UEFI mode.

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

    Re: 15.10 Wont boot - Missing boot loader

    Acer requires you to set "trust" on Ubuntu/grub's efi boot files.

    All these threads are really the same on setting password & trust.

    Very latest UEFI/BIOS works, downgrade not required:
    http://ubuntuforums.org/showthread.p...1#post13419141
    Acer E5-573G, downgrade UEFI, supervisor password & trust on Ubuntu efi boot files.
    http://askubuntu.com/questions/70691...1039248_706912
    Acer Aspire E15 will not dual boot
    http://askubuntu.com/questions/62741...-not-dual-boot
    Acer Aspire E 15 Downgrade to older UEFI, password & trust (ACPI issues?)
    http://ubuntuforums.org/showthread.p...2#post13403062
    Acer Aspire ES1-512-C39M Details on supervisor password and settings to enable trust on ubuntu entries Also R14 model same fix
    One of several with more details:
    http://ubuntuforums.org/showthread.php?t=2297947
    http://ubuntuforums.org/showthread.p...7#post13341757
    http://ubuntuforums.org/showthread.php?t=2291335
    http://ubuntuforums.org/showthread.p...4#post13203044
    h
    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.

  4. #4
    Join Date
    Jul 2010
    Beans
    8

    Re: 15.10 Wont boot - Missing boot loader

    Thank you for the replies - interesting info about Acer. I will look into this over the day and reply with any success.

    Thanks

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