Bug#608449: grub-pc: infinite debconf prompt loop (10 which devices? 20 continue without installing? 30 goto 10)

[Jonathan Nieder]

found 608449 grub2/1.98+20100804-10
quit

Jonathan Nieder wrote:

> Version: 1.98+20100804-11
[...]
> What if I just want to use the old
> version of grub-pc, which worked?

Harder than it sounds.  Symptoms are the same with 1.98+20100804-10
(even though I had successfully installed it before!).

After downgrading lvm, libdevmapper, and grub-pc 1.98~20091210-1, I
get:

| /usr/sbin/grub-probe: error: cannot find a device for /.
|
| dpkg: error processing grub-pc (--configure):

Even after a reboot grub-probe does not work.  Rebuilding
/boot/grub/device.map with grub-pc 1.98~20091210-1 gives

	(fd0)	/dev/fd0
	(hd0)	/dev/sda

Luckily grub-legacy is installed to /dev/sda and chainbooting works.
I'm out of ideas.