What Stéphane is trying to tell you is:
- You have a very sick puppy
- Better euthanise it
- Get a new puppy:
- back up all of your data, (Cold System Backup will be enough, use an external USB stick with CloneZilla Live
- wipe all your Manjaro partitions (Keep all the Windows ones!)
- install again using one single ESP (EFI System Partition)
- Restore your data
It’s not impossible to merge 2 ESPs, but looking at all the other problems you have, a reinstall will definitely be easier. Therefore, please read this first:
(All of it: I’ll be adding an UEFI / BIOS section later)
Then go back to point 3 above.
Stéphane: I’ll ping you over there to verify anything I’ve written as you’re the EIF Guru here… 