Preseeding answer to grub installation disk

[Stephen Wood]

Can someone help me preseeding the answer to this prompt when installing
the grub boot loader to a disk other than /dev/sda?

[image: Inline image 1]

I've tried the following things, but I still get prompted with this
question. I'd like it to just continue:

d-i grub-installer/only_debian boolean false
d-i grub-installer/with_other_os boolean false
d-i grub-installer/bootdev  string /dev/sdm

And also
d-i grub-installer/only_debian boolean true
d-i grub-installer/with_other_os boolean true
d-i grub-installer/bootdev  string /dev/sdm

And also adding:
d-i grub-pc/install_devices multiselect /dev/sdm

Regardless of what I add I still get the prompt. Note that /dev/sdm is also
where the OS installation resides.

-- 
Stephen Wood
www.heystephenwood.com
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