[SOLVED] boot-repair fixed Ubuntu / Mint dual boot GRUB issue

[LeeC]

I fiddled around with solving this problem long enough to want to share the solution, in case someone else finds themselves in the same situation.

Problem:
1. Running Linux Mint
2. Do side-by-side install of Ubuntu as another version of Linux to boot
3. Both are left working, but Grub version 2.02~beta3-4ubuntu7.1 is stuck booting to Ubuntu and Linux Mint can't be set back as default boot choice. So you have to manually move to the LM partion to boot it rather than Ubuntu.

Solutions:
A. Take some days off from work and learn about the history of GRUB, and try your hand at editing the files manually. OR,
B. As mentioned in a locked 2015 post in this section:

Code: Select all

sudo add-apt-repository ppa:yannubuntu/boot-repair
sudo apt-get update
sudo apt-get install -y boot-repair && boot-repair

Then select the GRUB location tab and pick the desired "OS to boot by default". Click Apply to write out changes, and then GRUB will boot correctly again.
pasetbin output proved by boot-repair for reference if you're interested: http://paste.ubuntu.com/p/B7pD4XZynT/

I had previously tried ppa:danielrichter2007/grub-customizer but it did not solve the problem.

Lee

[Pierre]

it is always great to hear of what resolutions are found,
by our Forum Users.

as a Linux Community - - we are primarily a self help group.