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Thread: How to remove a HDD from a System with multiple Ubuntu distributions and Grub2

  1. #11
    Join Date
    Jun 2009
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    SW Forida
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    Ubuntu

    Re: How to remove a HDD from a System with multiple Ubuntu distributions and Grub2

    When UEFI only, it must not show BIOS boot options, so your hard drive entry was a BIOS boot option.
    Many also have the fallback entry shown as a hard drive entry, but it will be more similar to the Ubuntu entry but instead of shimx64.efi, will be bootx64.efi in /EFI/Boot folder.

    UEFI entry looks correct.
    And if only one install, you will not normally get a grub menu as you only have one system to boot.
    To get to other entries like recovery entry, you have to press Escape key between UEFI screen & grub menu. If UEFI fast boot is on, you may not have time to press a key.

    Black screen issue, is often a video issue. What video card/chip?
    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.

  2. #12
    Join Date
    May 2016
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    64

    Re: How to remove a HDD from a System with multiple Ubuntu distributions and Grub2

    When UEFI only, it must not show BIOS boot options, so your hard drive entry was a BIOS boot option.
    Thank you for reminding me on why I enabled CSM previously; the HHD used a BIOS boot while the NVME SSD with a GPT partition table used an EFI Boot option.

    I noticed Boot-Repair has some privacy issue. To resolve the
    Invalid output format export. Choose from value, device, list, or full
    error from the $ sudo update-grub2 command, I am thinking that grub2 needs to be reinstalled and to use the approach mentioned in https://howtoubuntu.org/how-to-repai...ubuntu-live-cd. However, I think the EFI Boot partition also needs to be mounted. Can you advice me on any other amendments needed?

  3. #13
    Join Date
    Jun 2009
    Location
    SW Forida
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    Ubuntu

    Re: How to remove a HDD from a System with multiple Ubuntu distributions and Grub2

    If you boot live installer in UEFI mode and the use Boot-Repair to repair an UEFI install it should work.
    But it also has advanced mode.
    https://help.ubuntu.com/community/Boot-Repair
    https://sourceforge.net/p/boot-repair/home/Home/
    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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