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Ubuntu 14.04 UEFI won't boot after upgrade from 13.10

rated 0 times [ 1] [ 0] / answers: 1 / hits: 730 / 1 Year ago, thu, january 26, 2023, 4:44:43

Upgrading from Ubuntu 13.10 to Ubuntu 14.04 has resulted in a system that is not bootable.

The system consists of two disks: One with Windows 8 (/dev/sdaX) and one with Ubuntu 14.04 (/dev/sdbX). I was previously booting using an EFI partition /dev/sda2, but the Ubuntu upgrade installer has rendered this inoperative: it fails to a gparted fallback screen. /dev/sdb was originally a legacy MBR/BIOS-based system. I have attempted to create an EFI partition on /dev/sdb1, but I am not sure if I did it right. Boot-repair fails to fix either EFI partition.

Both Windows and Ubuntu are bootable with the assistance of super grub disk, but that is only the way I can get either system to boot.

Secure boot is not enabled.

Boot information is here: http://paste.ubuntu.com/7622020/

Do you have any recommendations for me? This looks like the bug given in https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1289977 , but there is no clear resolution available.

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lotceptin

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answered 1 Year ago farnic · Accepted Answer

I recommend you try my rEFInd boot manager. (It looks like you may have tried it at some point in the past but I see no evidence that it's currently installed.) Use the CD-R or USB flash drive version from the rEFInd downloads page for testing. If that doesn't work, you'll have done no more harm and you can move on to some other approach; but if it does work to boot both Linux and Windows, you can install the Debian package (either single-shot using the package from the downloads page or by using the PPA referenced at the bottom of the downloads page).