Comment 83 for bug 1396379

I hope this bug gets fixed, but my experience of it in your scenario is
merely that the host system has a grub entry which doesn't boot if the the
USB stick is not present but which doesn't affect existing entries, and
meanwhile the USB stick has no functional EFI partitions so it can't be
used as a boot device.

On Mon, 7 Nov 2022, 03:55 Ubfan, <email address hidden> wrote:

> Grub gets rewritten, with a dependency upon the target's root, so if the
> target is a removable USB, and you remove it, (think a 32GB USB stick
> you want to give to a friend), grub files get removed too, and your host
> system no longer boots. (and of course your target USB does not boot
> either) That's a critical bug according to
> https://wiki.ubuntu.com/Bugs/Importance:
>
> Critical: A bug that has a severe impact on a large portion of Ubuntu
> users
>
> Causes data corruption
> Crashes the entire operating system
> For example, if the system fails to boot, or X fails to start, on
> various makes and models of computer
> Renders the system temporarily or permanently unusable
>
> It's a quibble to say the bug didn't clobbered the system when the user
> removes the removable target, after the installer ignores the explicit
> grub target location.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1396379
>
> Title:
> installer uses first EFI system partition found even when directed
> otherwise
>
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