GRUB issue/ arch-chroot from Ubuntu

General system Newbie
1

So I also encountered the GRUB issue after an update and then tried to follow the instructions on The latest grub package update needs some manual intervention and https://discovery.endeavouros.com/system-rescue/arch-chroot-for-efi-uefi-systems/2021/03/

I’m running triple boot (Endeavour/Ubuntu/Windows) and changed the boot order so that I was able to get into my Ubuntu installation. I mounted my devices with chroot so that ls /home gave me my username, since I am unable to use arch-chroot for mounting in Ubuntu. So far, so good. But when I then try to run grub-install I receive the following error: grub-install: error: install device isn't specified. Just being apparently one step away from getting back to work is pretty frustrating, so any help would be greatly appreciated…

2

If you use the live usb of endeavouros you can arch-chroot properly into the installed EndeavourOS.

Edit: To arch-chroot you have to mount the / partition of the installed system first. Then you have to mount the efi partition which is your boot partition. Then you arch-chroot and you should be able to reinstall grub.

3

Great, thanks a lot! I thought I’d be possible to do it from any Linux OS, but will create an Endeavour USB then…

4

arch-chroot has to do with ARCH based distros, Ubuntu is not.

5

You could actually install arch-install-scripts providing arch-chroot on Ubuntu as well:

https://packages.ubuntu.com/bionic/arch-install-scripts

I use the same in a MX Linux install to chroot to an Arch system on the same disk. Works fine

6

You can chroot from another Linux. But you need to manually setup the full chroot. You can’t use arch-chroot. That means you also need to bind mount things like dev, sys and proc before entering the chroot.

7

Thanks a lot everyone. I created an Endeavour live USB, and then there was no problem carrying out the instructions, after running grub-install I just had to change the boot order, as per the instructions, and now everything’s working fine…

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