xubuntu 19.10 fails to install with /boot on different drive - grub-install error

[Liam Proven]

On Fri, 22 Nov 2019 at 17:07, Chris Green <cl at isbd.net> wrote:
> >
> Yes, it is, but there doesn't seem to be a way to specify where to put
> grub. I had assumed that saying that /boot is on /dev/sda1 would make
> the install put grub there as well.

No.

Assuming you click "something else" and arrange your own partitions,
then it's an option on that screen. It's below the list of drives and
partitions, and above the action buttons at the bottom.

https://zdnet2.cbsistatic.com/hub/i/r/2015/10/22/dd65739d-f393-40ff-a65c-25f6e6325bac/resize/770xauto/9308c67b2dbd4fce481228f62ac73cab/partitions.png

In this screenshot, it is shown as "device for boot loader
installation". You should get a drop-down list, which includes
whole-disk devices and partitions.

If you want it to be the default boot loader, then put it in the MBR
of /dev/sda.

If you don't, if you want to keep the GRUB of another Ubuntu
installation, then put it in /boot or /root.

However, if you do that, next, you must boot into that other copy of
Ubuntu, mount your new copy's /root and /boot, and run
``update-grub``. And you must re-do this every time you do an update
in the new OS that installs a new kernel.

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