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.
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.