After running Update Manager, a debconf window (titled "Configuring grub-pc"), popped up, requiring me to select the appropriate
GRUB install devices for my system. I've made no changes to grub or the filesystem recently, and I don't remember what options I selected last time I did make a change.
How do I know what to select? I'm assuming the wrong answer could render my system unable to boot.
Here's the debconf dialog:
Here's the window and text that is displayed when selecting "help" :