New-kernel-installed-but-does-not-show-in-grub (part two)

Support
1

I have an identical problem to a previous topic but the topic has been closed. I have two instances of Manjaro on this PC and it appears I am booting with the GRUB of the other Manjaro installation. Implementing the indicated solution returns:

$ sudo grub-install --recheck --no-rs-codes
Installing for i386-pc platform.
grub-install: error: install device isn’t specified.

I am nervous about trying my own solutions as messing about with kernels broke the previous installation so I’d welcome some advice before proceeding further.

2

You will need to know what kind of system as grub installation differs for each type

  • EFI
  • BIOS/GPT
  • BIOS/MBR

The command which gave an error message is partly a command for BIOS/MBR. Blindly executing grub-install commands without knowing the system will most likely cause not only errors but possibly other problems as well

3

My partition table is: GPT .

You are correct, I blindly issued a command that ruined my previous install. Sadly, it is how I seem to learn!