Now that grub2 1.99-19 was uploaded, this doesn't just affect
grub-installer's prompt before installing GRUB is now, from what I
can see, always broken, so it's at least as bad as the grub.cfg
actually generated. Therefore, this doesn't cause #666750 anymore.
The worst that should happen now if users are careful is that they'd
refuse to install Debian.
* Add grub-probe to grub-mount-udeb (LP: #963471).
There are now 2 scenarios:
I witnessed scenario 1 installing i386 on a recent desktop
(686-pae). I witnessed scenario 2 installing i386 on a non-PAE
laptop. Installs of the amd64 architecture should be in scenario 2.
In the end, this is a regression for amd64, but a big (unintended)
"improvement" for i386.
- If installing a Linux image different from the installer's
image, both the prompt and the actual grub.cfg will lack other
OS-en, so this is a consistent failure.
- If installing the same Linux image as the installer's, the
prompt will lack other OS-en, but the actual grub.cfg will have
other OS-en, so this is just a false alarm.